diff --git a/src/openrct2-ui/CursorRepository.cpp b/src/openrct2-ui/CursorRepository.cpp
index 61b027c2b2..fc0a973e84 100644
--- a/src/openrct2-ui/CursorRepository.cpp
+++ b/src/openrct2-ui/CursorRepository.cpp
@@ -22,7 +22,17 @@
 
 using namespace OpenRCT2::Ui;
 
-CursorRepository::CursorRepository()
+CursorRepository::~CursorRepository()
+{
+    for (size_t i = 0; i < CURSOR_COUNT; i++)
+    {
+        SDL_FreeCursor(_loadedCursors[i]);
+        _loadedCursors[i] = nullptr;
+    }
+    _currentCursor = CURSOR_UNDEFINED;
+}
+
+void CursorRepository::LoadCursors()
 {
     // Using system cursors
     _loadedCursors[CURSOR_ARROW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
@@ -42,16 +52,6 @@ CursorRepository::CursorRepository()
     SetCurrentCursor(CURSOR_ARROW);
 }
 
-CursorRepository::~CursorRepository()
-{
-    for (size_t i = 0; i < CURSOR_COUNT; i++)
-    {
-        SDL_FreeCursor(_loadedCursors[i]);
-        _loadedCursors[i] = nullptr;
-    }
-    _currentCursor = CURSOR_UNDEFINED;
-}
-
 CURSOR_ID CursorRepository::GetCurrentCursor()
 {
     return _currentCursor;
diff --git a/src/openrct2-ui/CursorRepository.h b/src/openrct2-ui/CursorRepository.h
index c15faf4a95..9a54c5ad30 100644
--- a/src/openrct2-ui/CursorRepository.h
+++ b/src/openrct2-ui/CursorRepository.h
@@ -28,12 +28,12 @@ namespace OpenRCT2
             constexpr static sint32 CURSOR_WIDTH = 32;
             constexpr static sint32 CURSOR_HEIGHT = 32;
 
-            SDL_Cursor *    _loadedCursors[CURSOR_COUNT];
+            SDL_Cursor *    _loadedCursors[CURSOR_COUNT] = { nullptr };
             CURSOR_ID       _currentCursor = CURSOR_UNDEFINED;
 
         public:
-            CursorRepository();
             ~CursorRepository();
+            void LoadCursors();
             CURSOR_ID GetCurrentCursor();
             void SetCurrentCursor(CURSOR_ID cursorId);
 
diff --git a/src/openrct2-ui/UiContext.cpp b/src/openrct2-ui/UiContext.cpp
index 58c03ef2de..9126c7eb69 100644
--- a/src/openrct2-ui/UiContext.cpp
+++ b/src/openrct2-ui/UiContext.cpp
@@ -83,6 +83,7 @@ public:
         {
             SDLException::Throw("SDL_Init(SDL_INIT_VIDEO)");
         }
+        _cursorRepository.LoadCursors();
     }
 
     ~UiContext() override
@@ -331,13 +332,13 @@ public:
             // Apple sends touchscreen events for trackpads, so ignore these events on macOS
 #ifndef __MACOSX__
             case SDL_FINGERMOTION:
-                _cursorState.x = (sint32)(e.tfinger.x * gScreenWidth);
-                _cursorState.y = (sint32)(e.tfinger.y * gScreenHeight);
+                _cursorState.x = (sint32)(e.tfinger.x * _width);
+                _cursorState.y = (sint32)(e.tfinger.y * _height);
                 break;
             case SDL_FINGERDOWN:
             {
-                sint32 x = (sint32)(e.tfinger.x * gScreenWidth);
-                sint32 y = (sint32)(e.tfinger.y * gScreenHeight);
+                sint32 x = (sint32)(e.tfinger.x * _width);
+                sint32 y = (sint32)(e.tfinger.y * _height);
 
                 _cursorState.touchIsDouble = (!_cursorState.touchIsDouble &&
                     e.tfinger.timestamp - _cursorState.touchDownTimestamp < TOUCH_DOUBLE_TIMEOUT);
@@ -360,8 +361,8 @@ public:
             }
             case SDL_FINGERUP:
             {
-                sint32 x = (sint32)(e.tfinger.x * gScreenWidth);
-                sint32 y = (sint32)(e.tfinger.y * gScreenHeight);
+                sint32 x = (sint32)(e.tfinger.x * _width);
+                sint32 y = (sint32)(e.tfinger.y * _height);
 
                 if (_cursorState.touchIsDouble)
                 {
@@ -393,7 +394,7 @@ public:
 
                     // Zoom gesture
                     constexpr sint32 tolerance = 128;
-                    sint32 gesturePixels = (sint32)(_gestureRadius * gScreenWidth);
+                    sint32 gesturePixels = (sint32)(_gestureRadius * _width);
                     if (abs(gesturePixels) > tolerance)
                     {
                         _gestureRadius = 0;
diff --git a/src/openrct2-ui/drawing/engines/SoftwareDrawingEngine.cpp b/src/openrct2-ui/drawing/engines/SoftwareDrawingEngine.cpp
index 710c945fec..934bd751cb 100644
--- a/src/openrct2-ui/drawing/engines/SoftwareDrawingEngine.cpp
+++ b/src/openrct2-ui/drawing/engines/SoftwareDrawingEngine.cpp
@@ -655,8 +655,8 @@ private:
         // Determine region in pixels
         uint32 left = Math::Max<uint32>(0, x * _dirtyGrid.BlockWidth);
         uint32 top = Math::Max<uint32>(0, y * _dirtyGrid.BlockHeight);
-        uint32 right = Math::Min((uint32)gScreenWidth, left + (columns * _dirtyGrid.BlockWidth));
-        uint32 bottom = Math::Min((uint32)gScreenHeight, top + (rows * _dirtyGrid.BlockHeight));
+        uint32 right = Math::Min(_width, left + (columns * _dirtyGrid.BlockWidth));
+        uint32 bottom = Math::Min(_height, top + (rows * _dirtyGrid.BlockHeight));
         if (right <= left || bottom <= top)
         {
             return;
diff --git a/src/openrct2/Context.cpp b/src/openrct2/Context.cpp
index d64c649b32..f8065494ba 100644
--- a/src/openrct2/Context.cpp
+++ b/src/openrct2/Context.cpp
@@ -664,4 +664,14 @@ extern "C"
         Memory::CopyArray(*outResolutions, resolutions.data(), count);
         return count;
     }
+
+    sint32 context_get_width()
+    {
+        return GetContext()->GetUiContext()->GetWidth();
+    }
+
+    sint32 context_get_height()
+    {
+        return GetContext()->GetUiContext()->GetHeight();
+    }
 }
diff --git a/src/openrct2/Context.h b/src/openrct2/Context.h
index 02f3d59317..219a52265f 100644
--- a/src/openrct2/Context.h
+++ b/src/openrct2/Context.h
@@ -100,6 +100,8 @@ extern "C"
     void context_trigger_resize();
     void context_set_fullscreen_mode(sint32 mode);
     sint32 context_get_resolutions(struct Resolution * * outResolutions);
+    sint32 context_get_width();
+    sint32 context_get_height();
 
 #ifdef __cplusplus
 }
diff --git a/src/openrct2/audio/audio.cpp b/src/openrct2/audio/audio.cpp
index 2f88b8e5a9..1717c6fc54 100644
--- a/src/openrct2/audio/audio.cpp
+++ b/src/openrct2/audio/audio.cpp
@@ -14,17 +14,19 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../config/Config.h"
+#include "../Context.h"
 #include "../core/File.h"
 #include "../core/FileStream.hpp"
 #include "../core/Memory.hpp"
 #include "../core/Util.hpp"
 #include "../localisation/string_ids.h"
 #include "../OpenRCT2.h"
+#include "../ui/UiContext.h"
 #include "AudioMixer.h"
 
 extern "C"
 {
-	#include "../config/Config.h"
 	#include "../interface/viewport.h"
 	#include "../intro.h"
 	#include "../localisation/language.h"
@@ -255,7 +257,7 @@ sint32 audio_play_sound(sint32 soundId, sint32 volume, sint32 pan)
 	sint32 mixerPan = 0;
 	if (pan != AUDIO_PLAY_AT_CENTRE) {
 		sint32 x2 = pan << 16;
-		uint16 screenWidth = Math::Max(64, gScreenWidth);
+		uint16 screenWidth = Math::Max<sint32>(64, OpenRCT2::GetContext()->GetUiContext()->GetWidth());
 		mixerPan = ((x2 / screenWidth) - 0x8000) >> 4;
 			}
 
diff --git a/src/openrct2/drawing/NewDrawing.cpp b/src/openrct2/drawing/NewDrawing.cpp
index 1ad69e3a22..31dc499dc0 100644
--- a/src/openrct2/drawing/NewDrawing.cpp
+++ b/src/openrct2/drawing/NewDrawing.cpp
@@ -139,7 +139,9 @@ extern "C"
         {
             drawing_engine_init();
         }
-        _drawingEngine->Resize(gScreenWidth, gScreenHeight);
+
+        IUiContext * uiContext = GetContext()->GetUiContext();
+        _drawingEngine->Resize(uiContext->GetWidth(), uiContext->GetHeight());
     }
 
     void drawing_engine_set_palette(SDL_Color * colours)
diff --git a/src/openrct2/drawing/drawing.c b/src/openrct2/drawing/drawing.c
index 0b9d727850..c5a6b2875b 100644
--- a/src/openrct2/drawing/drawing.c
+++ b/src/openrct2/drawing/drawing.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../common.h"
+#include "../Context.h"
 #include "../core/Guard.hpp"
 #include "../interface/window.h"
 #include "../localisation/localisation.h"
@@ -546,7 +547,7 @@ void load_palette(){
  */
 void gfx_invalidate_screen()
 {
-	gfx_set_dirty_blocks(0, 0, gScreenWidth, gScreenHeight);
+	gfx_set_dirty_blocks(0, 0, context_get_width(), context_get_height());
 }
 
 /**
diff --git a/src/openrct2/game.c b/src/openrct2/game.c
index 44884b798b..dcc2e839ee 100644
--- a/src/openrct2/game.c
+++ b/src/openrct2/game.c
@@ -17,6 +17,7 @@
 #include "audio/audio.h"
 #include "cheats.h"
 #include "config/Config.h"
+#include "Context.h"
 #include "editor.h"
 #include "game.h"
 #include "input.h"
@@ -138,7 +139,7 @@ void game_create_windows()
 	window_main_open();
 	window_top_toolbar_open();
 	window_game_bottom_toolbar_open();
-	window_resize_gui(gScreenWidth, gScreenHeight);
+	window_resize_gui(context_get_width(), context_get_height());
 }
 
 enum {
diff --git a/src/openrct2/input.c b/src/openrct2/input.c
index de806bf396..3a82b54037 100644
--- a/src/openrct2/input.c
+++ b/src/openrct2/input.c
@@ -138,8 +138,10 @@ void game_handle_input()
 	if (_inputFlags & INPUT_FLAG_5) {
 		game_handle_input_mouse(x, y, state);
 	} else if (x != 0x80000000) {
-		x = clamp(0, x, gScreenWidth - 1);
-		y = clamp(0, y, gScreenHeight - 1);
+		sint32 screenWidth = context_get_width();
+		sint32 screenHeight = context_get_height();
+		x = clamp(0, x, screenWidth - 1);
+		y = clamp(0, y, screenHeight - 1);
 
 		game_handle_input_mouse(x, y, state);
 		process_mouse_over(x, y);
@@ -470,7 +472,7 @@ static void input_window_resize_begin(rct_window *w, rct_widgetindex widgetIndex
 
 static void input_window_resize_continue(rct_window *w, sint32 x, sint32 y)
 {
-	if (y < (sint32)gScreenHeight - 2) {
+	if (y < (sint32)context_get_height() - 2) {
 		sint32 dx, dy, targetWidth, targetHeight;
 		dx = x - gInputDragLastX;
 		dy = y - gInputDragLastY;
@@ -1623,13 +1625,13 @@ void game_handle_edge_scroll()
 	const CursorState * cursorState = context_get_cursor_state();
 	if (cursorState->x == 0)
 		scrollX = -1;
-	else if (cursorState->x >= gScreenWidth - 1)
+	else if (cursorState->x >= context_get_width() - 1)
 		scrollX = 1;
 
 	// Scroll up / down
 	if (cursorState->y == 0)
 		scrollY = -1;
-	else if (cursorState->y >= gScreenHeight - 1)
+	else if (cursorState->y >= context_get_height() - 1)
 		scrollY = 1;
 
 	// Scroll viewport
diff --git a/src/openrct2/interface/chat.c b/src/openrct2/interface/chat.c
index c39afe0f95..f87b663616 100644
--- a/src/openrct2/interface/chat.c
+++ b/src/openrct2/interface/chat.c
@@ -84,9 +84,9 @@ void chat_draw(rct_drawpixelinfo * dpi)
 	}
 
 	_chatLeft = 10;
-	_chatRight = min((gScreenWidth - 10), CHAT_MAX_WINDOW_WIDTH);
+	_chatRight = min((context_get_width() - 10), CHAT_MAX_WINDOW_WIDTH);
 	_chatWidth = _chatRight - _chatLeft;
-	_chatBottom = gScreenHeight - 45;
+	_chatBottom = context_get_height() - 45;
 	_chatTop = _chatBottom - 10;
 
 	char lineBuffer[CHAT_INPUT_SIZE + 10];
diff --git a/src/openrct2/interface/console.c b/src/openrct2/interface/console.c
index 8b1ff0c56f..3fd9da5bfc 100644
--- a/src/openrct2/interface/console.c
+++ b/src/openrct2/interface/console.c
@@ -127,7 +127,7 @@ void console_update()
 
 	_consoleLeft = 0;
 	_consoleTop = 0;
-	_consoleRight = gScreenWidth;
+	_consoleRight = context_get_width();
 	_consoleBottom = 322;
 
 	if (gConsoleOpen) {
diff --git a/src/openrct2/interface/screenshot.c b/src/openrct2/interface/screenshot.c
index 6661d11b8a..ee6e677bce 100644
--- a/src/openrct2/interface/screenshot.c
+++ b/src/openrct2/interface/screenshot.c
@@ -16,6 +16,7 @@
 
 #include "../audio/audio.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../drawing/drawing.h"
 #include "../game.h"
 #include "../Imaging.h"
@@ -46,7 +47,7 @@ void screenshot_check()
 			screenshotIndex = screenshot_dump();
 
 			if (screenshotIndex != -1) {
-				audio_play_sound(SOUND_WINDOW_OPEN, 100, gScreenWidth / 2);
+				audio_play_sound(SOUND_WINDOW_OPEN, 100, context_get_width() / 2);
 			} else {
 				window_error_open(STR_SCREENSHOT_FAILED, STR_NONE);
 			}
diff --git a/src/openrct2/interface/viewport.c b/src/openrct2/interface/viewport.c
index 58d129e2e3..6227ae75f1 100644
--- a/src/openrct2/interface/viewport.c
+++ b/src/openrct2/interface/viewport.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../drawing/drawing.h"
 #include "../game.h"
 #include "../input.h"
@@ -424,8 +425,8 @@ static void viewport_move(sint16 x, sint16 y, rct_window* w, rct_viewport* viewp
 	if (w->flags & WF_7){
 		sint32 left = max(viewport->x, 0);
 		sint32 top = max(viewport->y, 0);
-		sint32 right = min(viewport->x + viewport->width, gScreenWidth);
-		sint32 bottom = min(viewport->y + viewport->height, gScreenHeight);
+		sint32 right = min(viewport->x + viewport->width, context_get_width());
+		sint32 bottom = min(viewport->y + viewport->height, context_get_height());
 
 		if (left >= right) return;
 		if (top >= bottom) return;
@@ -447,7 +448,7 @@ static void viewport_move(sint16 x, sint16 y, rct_window* w, rct_viewport* viewp
 		viewport->x = 0;
 	}
 
-	sint32 eax = viewport->x + viewport->width - gScreenWidth;
+	sint32 eax = viewport->x + viewport->width - context_get_width();
 	if (eax > 0){
 		viewport->width -= eax;
 		viewport->view_width -= eax * zoom;
@@ -465,7 +466,7 @@ static void viewport_move(sint16 x, sint16 y, rct_window* w, rct_viewport* viewp
 		viewport->y = 0;
 	}
 
-	eax = viewport->y + viewport->height - gScreenHeight;
+	eax = viewport->y + viewport->height - context_get_height();
 	if (eax > 0){
 		viewport->height -= eax;
 		viewport->view_height -= eax * zoom;
diff --git a/src/openrct2/interface/window.c b/src/openrct2/interface/window.c
index a153af4e24..75dfd10f12 100644
--- a/src/openrct2/interface/window.c
+++ b/src/openrct2/interface/window.c
@@ -500,8 +500,8 @@ rct_window *window_create(sint32 x, sint32 y, sint32 width, sint32 height, rct_w
  */
 static bool sub_6EA8EC(sint32 x, sint32 y, sint32 width, sint32 height)
 {
-	uint16 screenWidth = gScreenWidth;
-	uint16 screenHeight = gScreenHeight;
+	uint16 screenWidth = context_get_width();
+	uint16 screenHeight = context_get_height();
 	sint32 unk;
 
 	unk = -(width / 4);
@@ -527,8 +527,8 @@ static bool sub_6EA934(sint32 x, sint32 y, sint32 width, sint32 height)
 {
 	if (x < 0) return false;
 	if (y < 28) return false;
-	if (x + width > gScreenWidth) return false;
-	if (y + height > gScreenHeight) return false;
+	if (x + width > context_get_width()) return false;
+	if (y + height > context_get_height()) return false;
 	return sub_6EA95D(x, y, width, height);
 }
 
@@ -569,8 +569,8 @@ static bool sub_6EA95D(sint32 x, sint32 y, sint32 width, sint32 height)
  */
 rct_window *window_create_auto_pos(sint32 width, sint32 height, rct_window_event_list *event_handlers, rct_windowclass cls, uint16 flags)
 {
-	uint16 screenWidth = gScreenWidth;
-	uint16 screenHeight = gScreenHeight;
+	uint16 screenWidth = context_get_width();
+	uint16 screenHeight = context_get_height();
 
 	// TODO dead code, looks like it is cascading the new window offset from an existing window
 	// we will have to re-implement this in our own way.
@@ -579,11 +579,11 @@ rct_window *window_create_auto_pos(sint32 width, sint32 height, rct_window_event
 	// 	cls &= ~0x80;
 	// 	rct_window *w = window_find_by_number(0, 0);
 	// 	if (w != NULL) {
-	// 		if (w->x > -60 && w->x < gScreenWidth - 20) {
-	// 			if (w->y < gScreenHeight - 20) {
+	// 		if (w->x > -60 && w->x < screenWidth - 20) {
+	// 			if (w->y < screenHeight - 20) {
 	// 				sint32 x = w->x;
-	// 				if (w->x + width > gScreenWidth)
-	// 					x = gScreenWidth - 20 - width;
+	// 				if (w->x + width > screenWidth)
+	// 					x = screenWidth - 20 - width;
 	// 				sint32 y = w->y;
 	// 				return window_create(x + 10, y + 10, width, height, event_handlers, cls, flags);
 	// 			}
@@ -689,12 +689,13 @@ foundSpace:
 	return window_create(x, y, width, height, event_handlers, cls, flags);
 }
 
-rct_window *window_create_centred(sint32 width, sint32 height, rct_window_event_list *event_handlers, rct_windowclass cls, uint16 flags)
+rct_window * window_create_centred(sint32 width, sint32 height, rct_window_event_list *event_handlers, rct_windowclass cls, uint16 flags)
 {
-	sint32 x, y;
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
 
-	x = (gScreenWidth - width) / 2;
-	y = max(28, (gScreenHeight - height) / 2);
+	sint32 x = (screenWidth - width) / 2;
+	sint32 y = max(28, (screenHeight - height) / 2);
 	return window_create(x, y, width, height, event_handlers, cls, flags);
 }
 
@@ -1233,7 +1234,7 @@ void window_push_others_right(rct_window* window)
 			continue;
 
 		window_invalidate(w);
-		if (window->x + window->width + 13 >= gScreenWidth)
+		if (window->x + window->width + 13 >= context_get_width())
 			continue;
 		uint16 push_amount = window->x + window->width - w->x + 3;
 		w->x += push_amount;
@@ -1268,7 +1269,7 @@ void window_push_others_below(rct_window *w1)
 			continue;
 
 		// Check if there is room to push it down
-		if (w1->y + w1->height + 80 >= gScreenHeight)
+		if (w1->y + w1->height + 80 >= context_get_height())
 			continue;
 
 		// Invalidate the window's current area
@@ -2402,7 +2403,7 @@ static void window_snap_right(rct_window *w, sint32 proximity)
 		leftMost = min(leftMost, w2->x);
 	}
 
-	screenWidth = gScreenWidth;
+	screenWidth = context_get_width();
 	if (screenWidth >= wLeftProximity && screenWidth <= wRightProximity)
 		leftMost = min(leftMost, screenWidth);
 
@@ -2435,7 +2436,7 @@ static void window_snap_bottom(rct_window *w, sint32 proximity)
 		topMost = min(topMost, w2->y);
 	}
 
-	screenHeight = gScreenHeight;
+	screenHeight = context_get_height();
 	if (screenHeight >= wTopProximity && screenHeight <= wBottomProximity)
 		topMost = min(topMost, screenHeight);
 
@@ -2448,7 +2449,7 @@ void window_move_and_snap(rct_window *w, sint32 newWindowX, sint32 newWindowY, s
 	sint32 originalX = w->x;
 	sint32 originalY = w->y;
 
-	newWindowY = clamp(29, newWindowY, gScreenHeight - 34);
+	newWindowY = clamp(29, newWindowY, context_get_height() - 34);
 
 	if (snapProximity > 0) {
 		w->x = newWindowX;
diff --git a/src/openrct2/intro.c b/src/openrct2/intro.c
index 5b3b7fcd07..abd28d8c1b 100644
--- a/src/openrct2/intro.c
+++ b/src/openrct2/intro.c
@@ -69,7 +69,7 @@ void intro_update()
 		_introStateCounter += 5;
 
 		// Check if logo is off the screen...ish
-		if (_introStateCounter > gScreenHeight - 120) {
+		if (_introStateCounter > context_get_height() - 120) {
 			_introStateCounter = -116;
 			gIntroState++;
 		}
@@ -85,7 +85,7 @@ void intro_update()
 		_introStateCounter += 5;
 
 		// Check if logo is almost scrolled to the bottom
-		if (!_chainLiftFinished && _introStateCounter >= gScreenHeight + 40 - 421) {
+		if (!_chainLiftFinished && _introStateCounter >= context_get_height() + 40 - 421) {
 			_chainLiftFinished = true;
 
 			// Stop the chain lift sound
@@ -99,7 +99,7 @@ void intro_update()
 		}
 
 		// Check if logo is off the screen...ish
-		if (_introStateCounter >= gScreenHeight + 40) {
+		if (_introStateCounter >= context_get_height() + 40) {
 			// Stop the track friction sound
 			if (_soundChannel != NULL) {
 				Mixer_Stop_Channel(_soundChannel);
@@ -160,7 +160,7 @@ void intro_update()
 
 void intro_draw(rct_drawpixelinfo *dpi)
 {
-	sint32 screenWidth = gScreenWidth;
+	sint32 screenWidth = context_get_width();
 
 	switch (gIntroState) {
 	case INTRO_STATE_DISCLAIMER_1:
@@ -258,7 +258,7 @@ static void screen_intro_skip_part()
 
 static void screen_intro_draw_logo(rct_drawpixelinfo *dpi)
 {
-	sint32 screenWidth = gScreenWidth;
+	sint32 screenWidth = context_get_width();
 	sint32 imageWidth = 640;
 	sint32 imageX = (screenWidth - imageWidth) / 2;
 
diff --git a/src/openrct2/management/news_item.c b/src/openrct2/management/news_item.c
index 121270034c..6726b2821b 100644
--- a/src/openrct2/management/news_item.c
+++ b/src/openrct2/management/news_item.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../audio/audio.h"
+#include "../Context.h"
 #include "../input.h"
 #include "../interface/window.h"
 #include "../localisation/date.h"
@@ -97,7 +98,7 @@ static void news_item_tick_current()
 	// Only play news item sound when in normal playing mode
 	if (ticks == 1 && (gScreenFlags == SCREEN_FLAGS_PLAYING)) {
 		// Play sound
-		audio_play_sound_panned(SOUND_NEWS_ITEM, gScreenWidth / 2, 0, 0, 0);
+		audio_play_sound_panned(SOUND_NEWS_ITEM, context_get_width() / 2, 0, 0, 0);
 	}
 }
 
diff --git a/src/openrct2/peep/peep.c b/src/openrct2/peep/peep.c
index 1110a81a55..a92c51fe84 100644
--- a/src/openrct2/peep/peep.c
+++ b/src/openrct2/peep/peep.c
@@ -18,6 +18,7 @@
 #include "../audio/AudioMixer.h"
 #include "../cheats.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../game.h"
 #include "../input.h"
 #include "../interface/window.h"
@@ -6997,7 +6998,7 @@ void peep_applause()
 	}
 
 	// Play applause noise
-	audio_play_sound_panned(SOUND_APPLAUSE, gScreenWidth / 2, 0, 0, 0);
+	audio_play_sound_panned(SOUND_APPLAUSE, context_get_width() / 2, 0, 0, 0);
 }
 
 /**
diff --git a/src/openrct2/rct2.c b/src/openrct2/rct2.c
index 2fc34fdfd9..196f5244bb 100644
--- a/src/openrct2/rct2.c
+++ b/src/openrct2/rct2.c
@@ -20,6 +20,7 @@
 #include "audio/audio.h"
 #include "audio/AudioMixer.h"
 #include "config/Config.h"
+#include "Context.h"
 #include "drawing/drawing.h"
 #include "drawing/lightfx.h"
 #include "editor.h"
@@ -114,8 +115,6 @@ uint32 gCurrentDrawCount = 0;
 uint8 gScreenFlags;
 uint32 gScreenAge;
 uint8 gSavePromptMode;
-sint32 gScreenWidth;
-sint32 gScreenHeight;
 
 char gRCT2AddressAppPath[MAX_PATH];
 char gRCT2AddressSavedGamesPath[MAX_PATH];
@@ -273,7 +272,7 @@ void rct2_draw(rct_drawpixelinfo *dpi)
 	console_draw(dpi);
 
 	if ((gScreenFlags & SCREEN_FLAGS_TITLE_DEMO) && !gTitleHideVersionInfo) {
-		DrawOpenRCT2(dpi, 0, gScreenHeight - 20);
+		DrawOpenRCT2(dpi, 0, context_get_height() - 20);
 	}
 
 	if (gConfigGeneral.show_fps) {
@@ -303,7 +302,7 @@ static void rct2_measure_fps()
 
 static void rct2_draw_fps(rct_drawpixelinfo *dpi)
 {
-	sint32 x = gScreenWidth / 2;
+	sint32 x = context_get_width() / 2;
 	sint32 y = 2;
 
 	// Measure FPS
diff --git a/src/openrct2/rct2.h b/src/openrct2/rct2.h
index 829fa00771..002ded8c29 100644
--- a/src/openrct2/rct2.h
+++ b/src/openrct2/rct2.h
@@ -161,8 +161,6 @@ extern uint32 gCurrentDrawCount;
 extern uint8 gScreenFlags;
 extern uint32 gScreenAge;
 extern uint8 gSavePromptMode;
-extern sint32 gScreenWidth;
-extern sint32 gScreenHeight;
 
 extern char gRCT2AddressAppPath[];
 extern char gRCT2AddressSavedGamesPath[];
diff --git a/src/openrct2/ride/ride.c b/src/openrct2/ride/ride.c
index 8d5b12707b..0ccc6a02f8 100644
--- a/src/openrct2/ride/ride.c
+++ b/src/openrct2/ride/ride.c
@@ -19,6 +19,7 @@
 #include "../cheats.h"
 #include "../common.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../editor.h"
 #include "../game.h"
 #include "../input.h"
@@ -3448,7 +3449,7 @@ sint32 ride_music_params_update(sint16 x, sint16 y, sint16 z, uint8 rideIndex, u
 		}
 		sint32 x2 = viewport->x + ((rotatedCoords.x - viewport->view_x) >> viewport->zoom);
 		x2 *= 0x10000;
-		uint16 screenwidth = gScreenWidth;
+		uint16 screenwidth = context_get_width();
 		if (screenwidth < 64) {
 			screenwidth = 64;
 		}
@@ -3456,7 +3457,7 @@ sint32 ride_music_params_update(sint16 x, sint16 y, sint16 z, uint8 rideIndex, u
 
 		sint32 y2 = viewport->y + ((rotatedCoords.y - viewport->view_y) >> viewport->zoom);
 		y2 *= 0x10000;
-		uint16 screenheight = gScreenHeight;
+		uint16 screenheight = context_get_height();
 		if (screenheight < 64) {
 			screenheight = 64;
 		}
diff --git a/src/openrct2/ride/vehicle.c b/src/openrct2/ride/vehicle.c
index aa074353a5..c0b68850ca 100644
--- a/src/openrct2/ride/vehicle.c
+++ b/src/openrct2/ride/vehicle.c
@@ -17,6 +17,7 @@
 #include "../audio/audio.h"
 #include "../audio/AudioMixer.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../editor.h"
 #include "../game.h"
 #include "../interface/viewport.h"
@@ -701,7 +702,7 @@ static void vehicle_update_sound_params(rct_vehicle* vehicle)
 							pan_x >>= g_music_tracking_viewport->zoom;
 							pan_x += g_music_tracking_viewport->x;
 
-							uint16 screenwidth = gScreenWidth;
+							uint16 screenwidth = context_get_width();
 							if (screenwidth < 64) {
 								screenwidth = 64;
 							}
@@ -711,7 +712,7 @@ static void vehicle_update_sound_params(rct_vehicle* vehicle)
 							pan_y >>= g_music_tracking_viewport->zoom;
 							pan_y += g_music_tracking_viewport->y;
 
-							uint16 screenheight = gScreenHeight;
+							uint16 screenheight = context_get_height();
 							if (screenheight < 64) {
 								screenheight = 64;
 							}
diff --git a/src/openrct2/title/TitleScreen.cpp b/src/openrct2/title/TitleScreen.cpp
index 91a58229c0..bee7457ead 100644
--- a/src/openrct2/title/TitleScreen.cpp
+++ b/src/openrct2/title/TitleScreen.cpp
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../core/Console.hpp"
+#include "../Context.h"
 #include "../network/network.h"
 #include "../OpenRCT2.h"
 #include "../scenario/ScenarioRepository.h"
@@ -161,7 +162,7 @@ extern "C"
         window_title_exit_open();
         window_title_options_open();
         window_title_logo_open();
-        window_resize_gui(gScreenWidth, gScreenHeight);
+        window_resize_gui(context_get_width(), context_get_height());
         gTitleHideVersionInfo = false;
     }
 
diff --git a/src/openrct2/title/TitleSequencePlayer.cpp b/src/openrct2/title/TitleSequencePlayer.cpp
index c113fe55ce..29ec5db5fb 100644
--- a/src/openrct2/title/TitleSequencePlayer.cpp
+++ b/src/openrct2/title/TitleSequencePlayer.cpp
@@ -447,13 +447,13 @@ private:
             sint32 z = map_element_height(x, y);
             window_set_location(w, x, y, z);
             viewport_update_position(w);
-        }
 
-        // Save known tile position in case of window resize
-        _lastScreenWidth = gScreenWidth;
-        _lastScreenHeight = gScreenHeight;
-        _viewCentreLocation.x = x;
-        _viewCentreLocation.y = y;
+            // Save known tile position in case of window resize
+            _lastScreenWidth = w->width;
+            _lastScreenHeight = w->height;
+            _viewCentreLocation.x = x;
+            _viewCentreLocation.y = y;
+        }
     }
 
     /**
@@ -461,10 +461,14 @@ private:
      */
     void FixViewLocation()
     {
-        if (gScreenWidth != _lastScreenWidth ||
-            gScreenHeight != _lastScreenHeight)
+        rct_window * w = window_get_main();
+        if (w != nullptr)
         {
-            SetViewLocation(_viewCentreLocation.x, _viewCentreLocation.y);
+            if (w->width != _lastScreenWidth ||
+                w->height != _lastScreenHeight)
+            {
+                SetViewLocation(_viewCentreLocation.x, _viewCentreLocation.y);
+            }
         }
     }
 };
diff --git a/src/openrct2/windows/changelog.c b/src/openrct2/windows/changelog.c
index a5a0468180..57b8d0e178 100644
--- a/src/openrct2/windows/changelog.c
+++ b/src/openrct2/windows/changelog.c
@@ -14,6 +14,8 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
+#include "../interface/themes.h"
 #include "../interface/viewport.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -107,8 +109,8 @@ rct_window *window_changelog_open()
 	if (!window_changelog_read_file())
 		return NULL;
 
-	sint32 screenWidth = gScreenWidth;
-	sint32 screenHeight = gScreenHeight;
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
 
 	window = window_create_centred(
 		screenWidth * 4 / 5,
@@ -144,8 +146,8 @@ static void window_changelog_mouseup(rct_window *w, rct_widgetindex widgetIndex)
 
 static void window_changelog_resize(rct_window *w)
 {
-	sint32 screenWidth = gScreenWidth;
-	sint32 screenHeight = gScreenHeight;
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
 
 	w->max_width = (screenWidth * 4) / 5;
 	w->max_height = (screenHeight * 4) / 5;
diff --git a/src/openrct2/windows/clear_scenery.c b/src/openrct2/windows/clear_scenery.c
index 65db08efd8..f9b3eb6c19 100644
--- a/src/openrct2/windows/clear_scenery.c
+++ b/src/openrct2/windows/clear_scenery.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../input.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -104,7 +105,7 @@ void window_clear_scenery_open()
 	if (window_find_by_class(WC_CLEAR_SCENERY) != NULL)
 		return;
 
-	window = window_create(gScreenWidth - 98, 29, 98, 94, &window_clear_scenery_events, WC_CLEAR_SCENERY, 0);
+	window = window_create(context_get_width() - 98, 29, 98, 94, &window_clear_scenery_events, WC_CLEAR_SCENERY, 0);
 	window->widgets = window_clear_scenery_widgets;
 	window->enabled_widgets = (1 << WIDX_CLOSE) | (1 << WIDX_INCREMENT) | (1 << WIDX_DECREMENT) | (1 << WIDX_PREVIEW) |
 		(1 << WIDX_SMALL_SCENERY) | (1 << WIDX_LARGE_SCENERY) | (1 << WIDX_FOOTPATH);
diff --git a/src/openrct2/windows/debug_paint.c b/src/openrct2/windows/debug_paint.c
index ebaf5e867e..7c3d434d0b 100644
--- a/src/openrct2/windows/debug_paint.c
+++ b/src/openrct2/windows/debug_paint.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../input.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -81,15 +82,13 @@ static rct_window_event_list window_debug_paint_events = {
 
 void window_debug_paint_open()
 {
-	rct_window * window;
-
 	// Check if window is already open
 	if (window_find_by_class(WC_DEBUG_PAINT) != NULL)
 		return;
 
-	window = window_create(
+	rct_window * window = window_create(
 		16,
-		gScreenHeight - 16 - 33 - WINDOW_HEIGHT,
+		context_get_height() - 16 - 33 - WINDOW_HEIGHT,
 		WINDOW_WIDTH,
 		WINDOW_HEIGHT,
 		&window_debug_paint_events,
diff --git a/src/openrct2/windows/dropdown.c b/src/openrct2/windows/dropdown.c
index 666efb13c7..103218af36 100644
--- a/src/openrct2/windows/dropdown.c
+++ b/src/openrct2/windows/dropdown.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../input.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -176,10 +177,12 @@ void window_dropdown_show_text_custom_width(sint32 x, sint32 y, sint32 extray, u
 
 	width = _dropdown_item_width * _dropdown_num_columns + 3;
 	sint32 height = _dropdown_item_height * _dropdown_num_rows + 3;
-	if (x + width > gScreenWidth)
-		x = max(0, gScreenWidth - width);
-	if (y + height > gScreenHeight)
-		y = max(0, gScreenHeight - height);
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
+	if (x + width > screenWidth)
+		x = max(0, screenWidth - width);
+	if (y + height > screenHeight)
+		y = max(0, screenHeight - height);
 
 	window_dropdown_widgets[WIDX_BACKGROUND].bottom = (sint16)(_dropdown_item_height * num_items + 3);
 	window_dropdown_widgets[WIDX_BACKGROUND].right = (sint16)(_dropdown_item_width + 3);
@@ -245,10 +248,13 @@ void window_dropdown_show_image(sint32 x, sint32 y, sint32 extray, uint8 colour,
 	// Calculate position and size
 	width = _dropdown_item_width * _dropdown_num_columns + 3;
 	height = _dropdown_item_height * _dropdown_num_rows + 3;
-	if (x + width > gScreenWidth)
-		x = max(0, gScreenWidth - width);
-	if (y + height > gScreenHeight)
-		y = max(0, gScreenHeight - height);
+
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
+	if (x + width > screenWidth)
+		x = max(0, screenWidth - width);
+	if (y + height > screenHeight)
+		y = max(0, screenHeight - height);
 	window_dropdown_widgets[WIDX_BACKGROUND].right = width;
 	window_dropdown_widgets[WIDX_BACKGROUND].bottom = height;
 
diff --git a/src/openrct2/windows/editor_bottom_toolbar.c b/src/openrct2/windows/editor_bottom_toolbar.c
index 51f8b79efb..46a75d976e 100644
--- a/src/openrct2/windows/editor_bottom_toolbar.c
+++ b/src/openrct2/windows/editor_bottom_toolbar.c
@@ -16,6 +16,7 @@
 
 #include "../audio/audio.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../game.h"
 #include "../editor.h"
 #include "../input.h"
@@ -135,10 +136,8 @@ static void sub_6DFED0();
 */
 void window_editor_bottom_toolbar_open()
 {
-	rct_window* window;
-
-	window = window_create(0, gScreenHeight - 32,
-		gScreenWidth, 32,
+	rct_window * window = window_create(0, context_get_height() - 32,
+		context_get_width(), 32,
 		&window_editor_bottom_toolbar_events,
 		WC_BOTTOM_TOOLBAR, WF_STICK_TO_FRONT | WF_TRANSPARENT | WF_NO_BACKGROUND);
 	window->widgets = window_editor_bottom_toolbar_widgets;
@@ -371,7 +370,7 @@ void window_editor_bottom_toolbar_invalidate(rct_window *w)
 {
 	colour_scheme_update_by_class(w, (gScreenFlags & SCREEN_FLAGS_SCENARIO_EDITOR) ? WC_EDITOR_SCENARIO_BOTTOM_TOOLBAR : WC_EDITOR_TRACK_BOTTOM_TOOLBAR);
 
-	uint16 screenWidth = gScreenWidth;
+	uint16 screenWidth = context_get_width();
 	window_editor_bottom_toolbar_widgets[WIDX_NEXT_IMAGE].left = screenWidth - 200;
 	window_editor_bottom_toolbar_widgets[WIDX_NEXT_IMAGE].right = screenWidth - 1;
 	window_editor_bottom_toolbar_widgets[WIDX_NEXT_STEP_BUTTON].left = screenWidth - 198;
diff --git a/src/openrct2/windows/editor_main.c b/src/openrct2/windows/editor_main.c
index fd585e133c..d8397a43ba 100644
--- a/src/openrct2/windows/editor_main.c
+++ b/src/openrct2/windows/editor_main.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../interface/viewport.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -65,8 +66,8 @@ static rct_widget window_editor_main_widgets[] = {
 */
 rct_window * window_editor_main_open()
 {
-	window_editor_main_widgets[0].right = gScreenWidth;
-	window_editor_main_widgets[0].bottom = gScreenHeight;
+	window_editor_main_widgets[0].right = context_get_width();
+	window_editor_main_widgets[0].bottom = context_get_height();
 	rct_window *window = window_create(0, 0, window_editor_main_widgets[0].right, window_editor_main_widgets[0].bottom,
 		&window_editor_main_events, WC_MAIN_WINDOW, WF_STICK_TO_BACK);
 	window->widgets = window_editor_main_widgets;
diff --git a/src/openrct2/windows/error.c b/src/openrct2/windows/error.c
index 6c05b528d3..cc874b8693 100644
--- a/src/openrct2/windows/error.c
+++ b/src/openrct2/windows/error.c
@@ -121,13 +121,15 @@ void window_error_open(rct_string_id title, rct_string_id message)
 	window_error_widgets[WIDX_BACKGROUND].right = width;
 	window_error_widgets[WIDX_BACKGROUND].bottom = height;
 
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
 	const CursorState * state = context_get_cursor_state();
 	x = state->x - (width / 2);
-	x = clamp(0, x, gScreenWidth);
+	x = clamp(0, x, screenWidth);
 
 	y = state->y + 26;
 	y = max(22, y);
-	maxY = gScreenHeight - height;
+	maxY = screenHeight - height;
 	if (y > maxY) {
 		y = y - height - 40;
 		y = min(y, maxY);
diff --git a/src/openrct2/windows/game_bottom_toolbar.c b/src/openrct2/windows/game_bottom_toolbar.c
index 734fb837fd..61ea4d855a 100644
--- a/src/openrct2/windows/game_bottom_toolbar.c
+++ b/src/openrct2/windows/game_bottom_toolbar.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../game.h"
 #include "../input.h"
 #include "../interface/widget.h"
@@ -127,11 +128,11 @@ static void window_game_bottom_toolbar_invalidate_dirty_widgets(rct_window *w);
  */
 void window_game_bottom_toolbar_open()
 {
-	rct_window* window;
-
-	window = window_create(
-		0, gScreenHeight - 32,
-		gScreenWidth, 32,
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
+	rct_window * window = window_create(
+		0, screenHeight - 32,
+		screenWidth, 32,
 		&window_game_bottom_toolbar_events,
 		WC_BOTTOM_TOOLBAR,
 		WF_STICK_TO_FRONT | WF_TRANSPARENT | WF_NO_BACKGROUND
@@ -242,7 +243,7 @@ static void window_game_bottom_toolbar_invalidate(rct_window *w)
 	NewsItem *newsItem;
 
 	// Anchor the middle and right panel to the right
-	x = gScreenWidth;
+	x = context_get_width();
 	w->width = x;
 	x--;
 	window_game_bottom_toolbar_widgets[WIDX_RIGHT_OUTSET].right = x;
diff --git a/src/openrct2/windows/install_track.c b/src/openrct2/windows/install_track.c
index 7636d4233a..11ac600b76 100644
--- a/src/openrct2/windows/install_track.c
+++ b/src/openrct2/windows/install_track.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../audio/audio.h"
+#include "../Context.h"
 #include "../editor.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -125,8 +126,10 @@ void window_install_track_open(const utf8 *path)
 	gTrackDesignSceneryToggle = false;
 	_currentTrackPieceDirection = 2;
 
-	sint32 x = gScreenWidth / 2 - 201;
-	sint32 y = max(28, gScreenHeight / 2 - 200);
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
+	sint32 x = screenWidth / 2 - 201;
+	sint32 y = max(28, screenHeight / 2 - 200);
 
 	rct_window *w = window_create(x, y, 402, 400, &window_install_track_events, WC_INSTALL_TRACK, 0);
 	w->widgets = window_install_track_widgets;
diff --git a/src/openrct2/windows/land.c b/src/openrct2/windows/land.c
index 68acfbf88f..e56d6c614e 100644
--- a/src/openrct2/windows/land.c
+++ b/src/openrct2/windows/land.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../input.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -126,7 +127,7 @@ void window_land_open()
 	if (window_find_by_class(WC_LAND) != NULL)
 		return;
 
-	window = window_create(gScreenWidth - 98, 29, 98, 160, &window_land_events, WC_LAND, 0);
+	window = window_create(context_get_width() - 98, 29, 98, 160, &window_land_events, WC_LAND, 0);
 	window->widgets = window_land_widgets;
 	window->enabled_widgets =
 		(1 << WIDX_CLOSE) |
diff --git a/src/openrct2/windows/land_rights.c b/src/openrct2/windows/land_rights.c
index b888f1522d..f4ca519236 100644
--- a/src/openrct2/windows/land_rights.c
+++ b/src/openrct2/windows/land_rights.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../game.h"
 #include "../input.h"
 #include "../interface/viewport.h"
@@ -99,7 +100,7 @@ void window_land_rights_open()
 	if (window_find_by_class(WC_LAND_RIGHTS) != NULL)
 		return;
 
-	window = window_create(gScreenWidth - 98, 29, 98, 94, &window_land_rights_events, WC_LAND_RIGHTS, 0);
+	window = window_create(context_get_width() - 98, 29, 98, 94, &window_land_rights_events, WC_LAND_RIGHTS, 0);
 	window->widgets = window_land_rights_widgets;
 	window->enabled_widgets = (1 << WIDX_CLOSE) | (1 << WIDX_DECREMENT) | (1 << WIDX_INCREMENT) | (1 << WIDX_PREVIEW) |
 		(1 << WIDX_BUY_LAND_RIGHTS) | (1 << WIDX_BUY_CONSTRUCTION_RIGHTS);
diff --git a/src/openrct2/windows/main.c b/src/openrct2/windows/main.c
index 908fd5b4c0..2f6e7dede1 100644
--- a/src/openrct2/windows/main.c
+++ b/src/openrct2/windows/main.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../interface/viewport.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -64,11 +65,9 @@ static rct_window_event_list window_main_events = {
  */
 void window_main_open()
 {
-	rct_window* window;
-
-	window_main_widgets[0].right = gScreenWidth;
-	window_main_widgets[0].bottom = gScreenHeight;
-	window = window_create(
+	window_main_widgets[0].right = context_get_width();
+	window_main_widgets[0].bottom = context_get_height();
+	rct_window * window = window_create(
 		0, 0,
 		window_main_widgets[0].right, window_main_widgets[0].bottom,
 		&window_main_events,
diff --git a/src/openrct2/windows/park.c b/src/openrct2/windows/park.c
index d2a5b50ef9..646f643e72 100644
--- a/src/openrct2/windows/park.c
+++ b/src/openrct2/windows/park.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../game.h"
 #include "../localisation/date.h"
 #include "../localisation/localisation.h"
@@ -1667,8 +1668,8 @@ void window_park_objective_open()
 	window->hold_down_widgets = window_park_page_hold_down_widgets[WINDOW_PARK_PAGE_OBJECTIVE];
 	window->event_handlers = &window_park_objective_events;
 	window_init_scroll_widgets(window);
-	window->x = gScreenWidth / 2 - 115;
-	window->y = gScreenHeight / 2 - 87;
+	window->x = context_get_width() / 2 - 115;
+	window->y = context_get_height() / 2 - 87;
 	window_invalidate(window);
 }
 
diff --git a/src/openrct2/windows/scenery.c b/src/openrct2/windows/scenery.c
index 3a8143dc76..4969baa6c2 100644
--- a/src/openrct2/windows/scenery.c
+++ b/src/openrct2/windows/scenery.c
@@ -424,7 +424,7 @@ void window_scenery_open()
 	init_scenery();
 
 	window = window_create(
-		gScreenWidth - WINDOW_SCENERY_WIDTH,
+		context_get_width() - WINDOW_SCENERY_WIDTH,
 		0x1D,
 		WINDOW_SCENERY_WIDTH,
 		WINDOW_SCENERY_HEIGHT,
@@ -748,7 +748,7 @@ static void window_scenery_update(rct_window *w)
 					}
 				} else {
 					sint32 windowHeight = min(463, w->scrolls[0].v_bottom + 62);
-					if (gScreenHeight < 600)
+					if (context_get_height() < 600)
 						windowHeight = min(374, windowHeight);
 					windowHeight = max(WINDOW_SCENERY_HEIGHT, windowHeight);
 
diff --git a/src/openrct2/windows/title_exit.c b/src/openrct2/windows/title_exit.c
index 96b4133482..4ed0482db8 100644
--- a/src/openrct2/windows/title_exit.c
+++ b/src/openrct2/windows/title_exit.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../game.h"
 #include "../sprites.h"
 #include "../localisation/localisation.h"
@@ -75,7 +76,7 @@ void window_title_exit_open()
 	rct_window* window;
 
 	window = window_create(
-		gScreenWidth - 40, gScreenHeight - 64,
+		context_get_width() - 40, context_get_height() - 64,
 		40, 64,
 		&window_title_exit_events,
 		WC_TITLE_EXIT,
diff --git a/src/openrct2/windows/title_menu.c b/src/openrct2/windows/title_menu.c
index ea28d1c791..70eca7bdd8 100644
--- a/src/openrct2/windows/title_menu.c
+++ b/src/openrct2/windows/title_menu.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../editor.h"
 #include "../game.h"
 #include "../input.h"
@@ -88,7 +89,7 @@ void window_title_menu_open()
 	rct_window* window;
 
 	window = window_create(
-		0, gScreenHeight - 142,
+		0, context_get_height() - 142,
 		0, 100,
 		&window_title_menu_events,
 		WC_TITLE_MENU,
@@ -120,7 +121,7 @@ void window_title_menu_open()
 		i++;
 	}
 	window->width = x;
-	window->x = (gScreenWidth - window->width) / 2;
+	window->x = (context_get_width() - window->width) / 2;
 
 	window_init_scroll_widgets(window);
 }
diff --git a/src/openrct2/windows/title_options.c b/src/openrct2/windows/title_options.c
index 583ec59379..40af320e26 100644
--- a/src/openrct2/windows/title_options.c
+++ b/src/openrct2/windows/title_options.c
@@ -15,6 +15,7 @@
 #pragma endregion
 
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../game.h"
 #include "../intro.h"
 #include "../localisation/localisation.h"
@@ -70,10 +71,8 @@ static rct_window_event_list window_title_options_events = {
  */
 void window_title_options_open()
 {
-	rct_window* window;
-
-	window = window_create(
-		gScreenWidth - 80, 0,
+	rct_window * window = window_create(
+		context_get_width() - 80, 0,
 		80, 12,
 		&window_title_options_events,
 		WC_TITLE_OPTIONS,
diff --git a/src/openrct2/windows/tooltip.c b/src/openrct2/windows/tooltip.c
index 8cd8f35acc..975c1cb8bc 100644
--- a/src/openrct2/windows/tooltip.c
+++ b/src/openrct2/windows/tooltip.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../drawing/drawing.h"
 #include "../localisation/localisation.h"
 #include "../input.h"
@@ -110,12 +111,14 @@ void window_tooltip_show(rct_string_id id, sint32 x, sint32 y)
 
 	memcpy(_tooltipText, buffer, sizeof(_tooltipText));
 
-	x = clamp(0, x - (width / 2), gScreenWidth - width);
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
+	x = clamp(0, x - (width / 2), screenWidth - width);
 
 	// TODO The cursor size will be relative to the window DPI.
 	//      The amount to offset the y should be adjusted.
 
-	sint32 max_y = gScreenHeight - height;
+	sint32 max_y = screenHeight - height;
 	y += 26; // Normally, we'd display the tooltip 26 lower
 	if (y > max_y)
 		// If y is too large, the tooltip could be forced below the cursor if we'd just clamped y,
diff --git a/src/openrct2/windows/top_toolbar.c b/src/openrct2/windows/top_toolbar.c
index bbb0b8a133..51d7a246e9 100644
--- a/src/openrct2/windows/top_toolbar.c
+++ b/src/openrct2/windows/top_toolbar.c
@@ -17,6 +17,7 @@
 #include "../audio/audio.h"
 #include "../cheats.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../editor.h"
 #include "../game.h"
 #include "../input.h"
@@ -290,11 +291,9 @@ static uint16	_unkF64F15;
  */
 void window_top_toolbar_open()
 {
-	rct_window* window;
-
-	window = window_create(
+	rct_window * window = window_create(
 		0, 0,
-		gScreenWidth, 28,
+		context_get_width(), 28,
 		&window_top_toolbar_events,
 		WC_TOP_TOOLBAR,
 		WF_STICK_TO_FRONT | WF_TRANSPARENT | WF_NO_BACKGROUND
@@ -763,8 +762,9 @@ static void window_top_toolbar_invalidate(rct_window *w)
 	}
 
 	// Align right hand side toolbar buttons
+	sint32 screenWidth = context_get_width();
 	firstAlignment = 1;
-	x = max(640, gScreenWidth);
+	x = max(640, screenWidth);
 	for (sint32 i = 0; i < countof(right_aligned_widgets_order); ++i) {
 		widgetIndex = right_aligned_widgets_order[i];
 		widget = &window_top_toolbar_widgets[widgetIndex];
diff --git a/src/openrct2/windows/track_list.c b/src/openrct2/windows/track_list.c
index 574fd0bf0f..4e44db18f0 100644
--- a/src/openrct2/windows/track_list.c
+++ b/src/openrct2/windows/track_list.c
@@ -16,6 +16,7 @@
 
 #include "../audio/audio.h"
 #include "../config/Config.h"
+#include "../Context.h"
 #include "../drawing/IDrawingEngine.h"
 #include "../editor.h"
 #include "../interface/widget.h"
@@ -121,8 +122,10 @@ void window_track_list_open(ride_list_item item)
 
 	sint32 x, y;
 	if (gScreenFlags & SCREEN_FLAGS_TRACK_MANAGER) {
-		x = gScreenWidth / 2 - 300;
-		y = max(28, gScreenHeight / 2 - 200);
+		sint32 screenWidth = context_get_width();
+		sint32 screenHeight = context_get_height();
+		x = screenWidth / 2 - 300;
+		y = max(28, screenHeight / 2 - 200);
 	} else {
 		x = 0;
 		y = 29;
diff --git a/src/openrct2/windows/track_manage.c b/src/openrct2/windows/track_manage.c
index b248a74dc5..ac9599a894 100644
--- a/src/openrct2/windows/track_manage.c
+++ b/src/openrct2/windows/track_manage.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../game.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -252,13 +253,13 @@ static void window_track_manage_paint(rct_window *w, rct_drawpixelinfo *dpi)
  */
 static void window_track_delete_prompt_open()
 {
-	rct_window *w;
-
 	window_close_by_class(WC_TRACK_DELETE_PROMPT);
 
-	w = window_create(
-		max(28, (gScreenWidth - 250) / 2),
-		(gScreenHeight - 44) / 2,
+	sint32 screenWidth = context_get_width();
+	sint32 screenHeight = context_get_height();
+	rct_window *w = window_create(
+		max(28, (screenWidth - 250) / 2),
+		(screenHeight - 44) / 2,
 		250,
 		74,
 		&window_track_delete_prompt_events,
diff --git a/src/openrct2/windows/water.c b/src/openrct2/windows/water.c
index a4246ae32b..4871a2c7ca 100644
--- a/src/openrct2/windows/water.c
+++ b/src/openrct2/windows/water.c
@@ -14,6 +14,7 @@
  *****************************************************************************/
 #pragma endregion
 
+#include "../Context.h"
 #include "../input.h"
 #include "../interface/widget.h"
 #include "../interface/window.h"
@@ -98,7 +99,7 @@ void window_water_open()
 		return;
 
 	window = window_create(
-		gScreenWidth - 76,
+		context_get_width() - 76,
 		29,
 		76,
 		77,