diff --git a/src/openrct2-ui/WindowManager.cpp b/src/openrct2-ui/WindowManager.cpp
index 869626a465..2a79bf564d 100644
--- a/src/openrct2-ui/WindowManager.cpp
+++ b/src/openrct2-ui/WindowManager.cpp
@@ -207,6 +207,11 @@ public:
         return window_error_open(title, message);
     }
 
+    rct_window* ShowError(const std::string_view& title, const std::string_view& message) override
+    {
+        return window_error_open(title, message);
+    }
+
     rct_window* OpenIntent(Intent* intent) override
     {
         switch (intent->GetWindowClass())
diff --git a/src/openrct2-ui/windows/Error.cpp b/src/openrct2-ui/windows/Error.cpp
index b7cad6960d..5e6f2101fd 100644
--- a/src/openrct2-ui/windows/Error.cpp
+++ b/src/openrct2-ui/windows/Error.cpp
@@ -62,7 +62,7 @@ static rct_window_event_list window_error_events = {
 };
 // clang-format on
 
-static char _window_error_text[512];
+static std::string _window_error_text;
 static uint16_t _window_error_num_lines;
 
 /**
@@ -74,30 +74,38 @@ static uint16_t _window_error_num_lines;
  */
 rct_window* window_error_open(rct_string_id title, rct_string_id message)
 {
-    utf8* dst;
+    auto titlez = format_string(title, gCommonFormatArgs);
+    auto messagez = format_string(message, gCommonFormatArgs);
+    return window_error_open(titlez, messagez);
+}
+
+rct_window* window_error_open(const std::string_view& title, const std::string_view& message)
+{
     int32_t numLines, fontHeight, width, height, maxY;
     rct_window* w;
 
     window_close_by_class(WC_ERROR);
-    dst = _window_error_text;
+    auto& buffer = _window_error_text;
+    buffer.clear();
 
     // Format the title
-    dst = utf8_write_codepoint(dst, FORMAT_BLACK);
-    if (title != STR_NONE)
     {
-        format_string(dst, 512 - (dst - _window_error_text), title, gCommonFormatArgs);
-        dst = get_string_end(dst);
+        char temp[8]{};
+        utf8_write_codepoint(temp, FORMAT_BLACK);
+        buffer.append(temp);
     }
+    buffer.append(title);
 
     // Format the message
-    if (message != STR_NONE)
+    if (!message.empty())
     {
-        dst = utf8_write_codepoint(dst, FORMAT_NEWLINE);
-        format_string(dst, 512 - (dst - _window_error_text), message, gCommonFormatArgs);
-        dst = get_string_end(dst);
+        char temp[8]{};
+        utf8_write_codepoint(temp, FORMAT_NEWLINE);
+        buffer.append(temp);
+        buffer.append(message);
     }
 
-    log_verbose("show error, %s", _window_error_text + 1);
+    log_verbose("show error, %s", buffer.c_str() + 1);
 
     // Don't do unnecessary work in headless. Also saves checking if cursor state is null.
     if (gOpenRCT2Headless)
@@ -106,15 +114,15 @@ rct_window* window_error_open(rct_string_id title, rct_string_id message)
     }
 
     // Check if there is any text to display
-    if (dst == _window_error_text + 1)
+    if (buffer.size() <= 1)
         return nullptr;
 
     gCurrentFontSpriteBase = FONT_SPRITE_BASE_MEDIUM;
-    width = gfx_get_string_width_new_lined(_window_error_text);
+    width = gfx_get_string_width_new_lined(buffer.data());
     width = std::clamp(width, 64, 196);
 
     gCurrentFontSpriteBase = FONT_SPRITE_BASE_MEDIUM;
-    gfx_wrap_string(_window_error_text, width + 1, &numLines, &fontHeight);
+    gfx_wrap_string(buffer.data(), width + 1, &numLines, &fontHeight);
 
     _window_error_num_lines = numLines;
     width = width + 3;
@@ -186,5 +194,5 @@ static void window_error_paint(rct_window* w, rct_drawpixelinfo* dpi)
 
     l = w->windowPos.x + (w->width + 1) / 2 - 1;
     t = w->windowPos.y + 1;
-    draw_string_centred_raw(dpi, l, t, _window_error_num_lines, _window_error_text);
+    draw_string_centred_raw(dpi, l, t, _window_error_num_lines, _window_error_text.data());
 }
diff --git a/src/openrct2-ui/windows/RideConstruction.cpp b/src/openrct2-ui/windows/RideConstruction.cpp
index 8fc121ec55..f875773cc6 100644
--- a/src/openrct2-ui/windows/RideConstruction.cpp
+++ b/src/openrct2-ui/windows/RideConstruction.cpp
@@ -1824,7 +1824,10 @@ static void window_ride_construction_construct(rct_window* w)
     // Used by some functions
     if (res->Error != GA_ERROR::OK)
     {
-        gGameCommandErrorText = res->ErrorMessage;
+        if (auto error = std::get_if<rct_string_id>(&res->ErrorMessage))
+            gGameCommandErrorText = *error;
+        else
+            gGameCommandErrorText = STR_NONE;
         _trackPlaceCost = MONEY32_UNDEFINED;
     }
     else
diff --git a/src/openrct2-ui/windows/TopToolbar.cpp b/src/openrct2-ui/windows/TopToolbar.cpp
index 0ddd5ade53..dc04ebfb0b 100644
--- a/src/openrct2-ui/windows/TopToolbar.cpp
+++ b/src/openrct2-ui/windows/TopToolbar.cpp
@@ -1947,9 +1947,12 @@ static void window_top_toolbar_scenery_tool_down(int16_t x, int16_t y, rct_windo
                     break;
                 }
 
-                if (res->ErrorMessage == STR_NOT_ENOUGH_CASH_REQUIRES || res->ErrorMessage == STR_CAN_ONLY_BUILD_THIS_ON_WATER)
+                if (auto message = std::get_if<rct_string_id>(&res->ErrorMessage))
                 {
-                    break;
+                    if (*message == STR_NOT_ENOUGH_CASH_REQUIRES || *message == STR_CAN_ONLY_BUILD_THIS_ON_WATER)
+                    {
+                        break;
+                    }
                 }
 
                 if (zAttemptRange != 1)
@@ -1997,9 +2000,12 @@ static void window_top_toolbar_scenery_tool_down(int16_t x, int16_t y, rct_windo
                     break;
                 }
 
-                if (res->ErrorMessage == STR_NOT_ENOUGH_CASH_REQUIRES || res->ErrorMessage == STR_CAN_ONLY_BUILD_THIS_ON_WATER)
+                if (auto message = std::get_if<rct_string_id>(&res->ErrorMessage))
                 {
-                    break;
+                    if (*message == STR_NOT_ENOUGH_CASH_REQUIRES || *message == STR_CAN_ONLY_BUILD_THIS_ON_WATER)
+                    {
+                        break;
+                    }
                 }
 
                 if (zAttemptRange != 1)
diff --git a/src/openrct2-ui/windows/TrackDesignPlace.cpp b/src/openrct2-ui/windows/TrackDesignPlace.cpp
index 8d8b2ce063..fc40213817 100644
--- a/src/openrct2-ui/windows/TrackDesignPlace.cpp
+++ b/src/openrct2-ui/windows/TrackDesignPlace.cpp
@@ -23,11 +23,15 @@
 #include <openrct2/ride/TrackDesign.h>
 #include <openrct2/ride/TrackDesignRepository.h>
 #include <openrct2/sprites.h>
+#include <openrct2/ui/UiContext.h>
+#include <openrct2/ui/WindowManager.h>
 #include <openrct2/windows/Intent.h>
 #include <openrct2/world/Park.h>
 #include <openrct2/world/Surface.h>
 #include <vector>
 
+using namespace OpenRCT2;
+
 constexpr int16_t TRACK_MINI_PREVIEW_WIDTH = 168;
 constexpr int16_t TRACK_MINI_PREVIEW_HEIGHT = 78;
 constexpr uint16_t TRACK_MINI_PREVIEW_SIZE = TRACK_MINI_PREVIEW_WIDTH * TRACK_MINI_PREVIEW_HEIGHT;
@@ -391,8 +395,9 @@ static void window_track_place_tooldown(rct_window* w, rct_widgetindex widgetInd
 
     // Unable to build track
     audio_play_sound_at_location(SoundId::Error, trackLoc);
-    std::copy(res->ErrorMessageArgs.begin(), res->ErrorMessageArgs.end(), gCommonFormatArgs);
-    context_show_error(res->ErrorTitle, res->ErrorMessage);
+
+    auto windowManager = GetContext()->GetUiContext()->GetWindowManager();
+    windowManager->ShowError(res->GetErrorTitle(), res->GetErrorMessage());
 }
 
 /**
diff --git a/src/openrct2-ui/windows/Window.h b/src/openrct2-ui/windows/Window.h
index 75c7f67d77..b5894144dd 100644
--- a/src/openrct2-ui/windows/Window.h
+++ b/src/openrct2-ui/windows/Window.h
@@ -13,6 +13,7 @@
 #include <openrct2/common.h>
 #include <openrct2/ride/Ride.h>
 #include <openrct2/windows/tile_inspector.h>
+#include <string_view>
 
 using loadsave_callback = void (*)(int32_t result, const utf8* path);
 using scenarioselect_callback = void (*)(const utf8* path);
@@ -105,6 +106,7 @@ void window_title_command_editor_open(struct TitleSequence* sequence, int32_t co
 rct_window* window_scenarioselect_open(scenarioselect_callback callback, bool titleEditor);
 
 rct_window* window_error_open(rct_string_id title, rct_string_id message);
+rct_window* window_error_open(const std::string_view& title, const std::string_view& message);
 struct TrackDesign;
 rct_window* window_loadsave_open(int32_t type, const char* defaultName, loadsave_callback callback, TrackDesign* t6Exporter);
 rct_window* window_track_place_open(const struct track_design_file_ref* tdFileRef);
diff --git a/src/openrct2/actions/GameAction.cpp b/src/openrct2/actions/GameAction.cpp
index 7462e05140..03cb680b93 100644
--- a/src/openrct2/actions/GameAction.cpp
+++ b/src/openrct2/actions/GameAction.cpp
@@ -18,12 +18,16 @@
 #include "../network/network.h"
 #include "../platform/platform.h"
 #include "../scenario/Scenario.h"
+#include "../ui/UiContext.h"
+#include "../ui/WindowManager.h"
 #include "../world/Park.h"
 #include "../world/Scenery.h"
 
 #include <algorithm>
 #include <iterator>
 
+using namespace OpenRCT2;
+
 GameActionResult::GameActionResult(GA_ERROR error, rct_string_id message)
 {
     Error = error;
@@ -45,6 +49,34 @@ GameActionResult::GameActionResult(GA_ERROR error, rct_string_id title, rct_stri
     std::copy_n(args, ErrorMessageArgs.size(), ErrorMessageArgs.begin());
 }
 
+std::string GameActionResult::GetErrorTitle() const
+{
+    std::string titlez;
+    if (auto title = std::get_if<std::string>(&ErrorTitle))
+    {
+        titlez = *title;
+    }
+    else
+    {
+        titlez = format_string(std::get<rct_string_id>(ErrorTitle), nullptr);
+    }
+    return titlez;
+}
+
+std::string GameActionResult::GetErrorMessage() const
+{
+    std::string messagez;
+    if (auto message = std::get_if<std::string>(&ErrorMessage))
+    {
+        messagez = *message;
+    }
+    else
+    {
+        messagez = format_string(std::get<rct_string_id>(ErrorMessage), ErrorMessageArgs.data());
+    }
+    return messagez;
+}
+
 namespace GameActions
 {
     struct QueuedGameAction
@@ -486,9 +518,8 @@ namespace GameActions
 
         if (result->Error != GA_ERROR::OK && shouldShowError)
         {
-            // Show the error box
-            std::copy(result->ErrorMessageArgs.begin(), result->ErrorMessageArgs.end(), gCommonFormatArgs);
-            context_show_error(result->ErrorTitle, result->ErrorMessage);
+            auto windowManager = GetContext()->GetUiContext()->GetWindowManager();
+            windowManager->ShowError(result->GetErrorTitle(), result->GetErrorMessage());
         }
 
         return result;
diff --git a/src/openrct2/actions/GameAction.h b/src/openrct2/actions/GameAction.h
index ab3005901b..474dddc6a0 100644
--- a/src/openrct2/actions/GameAction.h
+++ b/src/openrct2/actions/GameAction.h
@@ -20,6 +20,7 @@
 #include <functional>
 #include <memory>
 #include <utility>
+#include <variant>
 
 /**
  * Common error codes for game actions.
@@ -69,8 +70,8 @@ public:
     using Ptr = std::unique_ptr<GameActionResult>;
 
     GA_ERROR Error = GA_ERROR::OK;
-    rct_string_id ErrorTitle = STR_NONE;
-    rct_string_id ErrorMessage = STR_NONE;
+    std::variant<rct_string_id, std::string> ErrorTitle = STR_NONE;
+    std::variant<rct_string_id, std::string> ErrorMessage = STR_NONE;
     std::array<uint8_t, 32> ErrorMessageArgs;
     CoordsXYZ Position = { LOCATION_NULL, LOCATION_NULL, LOCATION_NULL };
     money32 Cost = 0;
@@ -82,6 +83,9 @@ public:
     GameActionResult(GA_ERROR error, rct_string_id title, rct_string_id message, uint8_t* args);
     GameActionResult(const GameActionResult&) = delete;
     virtual ~GameActionResult(){};
+
+    std::string GetErrorTitle() const;
+    std::string GetErrorMessage() const;
 };
 
 struct GameAction
diff --git a/src/openrct2/actions/GameActionCompat.cpp b/src/openrct2/actions/GameActionCompat.cpp
index d389c7cae5..aebf267c9f 100644
--- a/src/openrct2/actions/GameActionCompat.cpp
+++ b/src/openrct2/actions/GameActionCompat.cpp
@@ -140,8 +140,14 @@ money32 maze_set_track(
 
     // NOTE: ride_construction_tooldown_construct requires them to be set.
     // Refactor result type once theres no C code referencing this function.
-    gGameCommandErrorText = res->ErrorMessage;
-    gGameCommandErrorTitle = res->ErrorTitle;
+    if (auto title = std::get_if<rct_string_id>(&res->ErrorTitle))
+        gGameCommandErrorTitle = *title;
+    else
+        gGameCommandErrorTitle = STR_NONE;
+    if (auto message = std::get_if<rct_string_id>(&res->ErrorMessage))
+        gGameCommandErrorText = *message;
+    else
+        gGameCommandErrorText = STR_NONE;
 
     if (res->Error != GA_ERROR::OK)
     {
diff --git a/src/openrct2/actions/LandSmoothAction.hpp b/src/openrct2/actions/LandSmoothAction.hpp
index 502bc7b3aa..3d50624403 100644
--- a/src/openrct2/actions/LandSmoothAction.hpp
+++ b/src/openrct2/actions/LandSmoothAction.hpp
@@ -642,7 +642,7 @@ private:
             }
             default:
                 log_error("Invalid map selection %u", _selectionType);
-                return MakeResult(GA_ERROR::INVALID_PARAMETERS, res->ErrorTitle);
+                return MakeResult(GA_ERROR::INVALID_PARAMETERS, std::get<rct_string_id>(res->ErrorTitle));
         } // switch selectionType
 
         // Raise / lower the land tool selection area
diff --git a/src/openrct2/actions/MazePlaceTrackAction.hpp b/src/openrct2/actions/MazePlaceTrackAction.hpp
index 079c1a2c21..18c723399a 100644
--- a/src/openrct2/actions/MazePlaceTrackAction.hpp
+++ b/src/openrct2/actions/MazePlaceTrackAction.hpp
@@ -93,7 +93,7 @@ public:
                 { _loc.ToTileStart(), baseHeight, clearanceHeight }, &map_place_non_scenery_clear_func, { 0b1111, 0 },
                 GetFlags(), &clearCost, CREATE_CROSSING_MODE_NONE))
         {
-            return MakeResult(GA_ERROR::NO_CLEARANCE, res->ErrorTitle, gGameCommandErrorText, gCommonFormatArgs);
+            return MakeResult(GA_ERROR::NO_CLEARANCE, std::get<rct_string_id>(res->ErrorTitle), gGameCommandErrorText, gCommonFormatArgs);
         }
 
         if (gMapGroundFlags & ELEMENT_IS_UNDERWATER)
@@ -162,7 +162,7 @@ public:
                 { _loc.ToTileStart(), baseHeight, clearanceHeight }, &map_place_non_scenery_clear_func, { 0b1111, 0 },
                 GetFlags() | GAME_COMMAND_FLAG_APPLY, &clearCost, CREATE_CROSSING_MODE_NONE))
         {
-            return MakeResult(GA_ERROR::NO_CLEARANCE, res->ErrorTitle, gGameCommandErrorText, gCommonFormatArgs);
+            return MakeResult(GA_ERROR::NO_CLEARANCE, std::get<rct_string_id>(res->ErrorTitle), gGameCommandErrorText, gCommonFormatArgs);
         }
 
         money32 price = (((RideTrackCosts[ride->type].track_price * TrackPricing[TRACK_ELEM_MAZE]) >> 16));
diff --git a/src/openrct2/actions/MazeSetTrackAction.hpp b/src/openrct2/actions/MazeSetTrackAction.hpp
index 4e980be78a..7dc8adeeb5 100644
--- a/src/openrct2/actions/MazeSetTrackAction.hpp
+++ b/src/openrct2/actions/MazeSetTrackAction.hpp
@@ -136,7 +136,8 @@ public:
 
             if (!map_can_construct_at({ _loc.ToTileStart(), baseHeight, clearanceHeight }, { 0b1111, 0 }))
             {
-                return MakeResult(GA_ERROR::NO_CLEARANCE, res->ErrorTitle, gGameCommandErrorText, gCommonFormatArgs);
+                return MakeResult(
+                    GA_ERROR::NO_CLEARANCE, std::get<rct_string_id>(res->ErrorTitle), gGameCommandErrorText, gCommonFormatArgs);
             }
 
             if (gMapGroundFlags & ELEMENT_IS_UNDERWATER)
diff --git a/src/openrct2/scripting/Duktape.hpp b/src/openrct2/scripting/Duktape.hpp
index 280f5293fe..d6e695d482 100644
--- a/src/openrct2/scripting/Duktape.hpp
+++ b/src/openrct2/scripting/Duktape.hpp
@@ -20,4 +20,19 @@ template<typename T> DukValue GetObjectAsDukValue(duk_context* ctx, const std::s
     return DukValue::take_from_stack(ctx);
 }
 
+template<typename T>
+const T AsOrDefault(const DukValue& value, const T& defaultValue = {}) = delete;
+
+template<>
+inline const std::string AsOrDefault(const DukValue& value, const std::string& defaultValue)
+{
+    return value.type() == DukValue::STRING ? value.as_string() : defaultValue;
+}
+
+template<>
+inline const int32_t AsOrDefault(const DukValue& value, const int32_t& defaultValue)
+{
+    return value.type() == DukValue::NUMBER ? value.as_int() : defaultValue;
+}
+
 #endif
diff --git a/src/openrct2/scripting/ScContext.hpp b/src/openrct2/scripting/ScContext.hpp
index f6e72fbf1e..75f8abc26f 100644
--- a/src/openrct2/scripting/ScContext.hpp
+++ b/src/openrct2/scripting/ScContext.hpp
@@ -160,11 +160,11 @@ namespace OpenRCT2::Scripting
 
             if (res.Error != GA_ERROR::OK)
             {
-                auto title = format_string(res.ErrorTitle, nullptr);
+                auto title = res.GetErrorTitle();
                 duk_push_string(ctx, title.c_str());
                 duk_put_prop_string(ctx, objIdx, "errorTitle");
 
-                auto message = format_string(res.ErrorMessage, res.ErrorMessageArgs.data());
+                auto message = res.GetErrorMessage();
                 duk_push_string(ctx, message.c_str());
                 duk_put_prop_string(ctx, objIdx, "errorMessage");
             }
diff --git a/src/openrct2/scripting/ScriptEngine.cpp b/src/openrct2/scripting/ScriptEngine.cpp
index 95b5efc74d..981bae7005 100644
--- a/src/openrct2/scripting/ScriptEngine.cpp
+++ b/src/openrct2/scripting/ScriptEngine.cpp
@@ -732,10 +732,10 @@ std::unique_ptr<GameActionResult> ScriptEngine::QueryOrExecuteCustomGameAction(
 std::unique_ptr<GameActionResult> ScriptEngine::DukToGameActionResult(const DukValue& d)
 {
     auto result = std::make_unique<GameActionResult>();
-    result->Error = d["error"].type() == DukValue::Type::NUMBER ? static_cast<GA_ERROR>(d["error"].as_int()) : GA_ERROR::OK;
-    auto errorTitle = d["errorTitle"].type() == DukValue::Type::STRING ? d["errorTitle"].as_string() : std::string();
-    auto errorMessage = d["errorMessage"].type() == DukValue::Type::STRING ? d["errorMessage"].as_string() : std::string();
-    result->Cost = d["cost"].type() == DukValue::Type::NUMBER ? d["cost"].as_int() : 0;
+    result->Error = static_cast<GA_ERROR>(AsOrDefault<int32_t>(d["error"]));
+    result->ErrorTitle = AsOrDefault<std::string>(d["errorTitle"]);
+    result->ErrorMessage = AsOrDefault<std::string>(d["errorMessage"]);
+    result->Cost = AsOrDefault<int32_t>(d["cost"]);
     return result;
 }
 
diff --git a/src/openrct2/ui/DummyWindowManager.cpp b/src/openrct2/ui/DummyWindowManager.cpp
index 8d1c6ab0a7..42c8d071ef 100644
--- a/src/openrct2/ui/DummyWindowManager.cpp
+++ b/src/openrct2/ui/DummyWindowManager.cpp
@@ -30,6 +30,10 @@ namespace OpenRCT2::Ui
         {
             return nullptr;
         }
+        rct_window* ShowError(const std::string_view& /*title*/, const std::string_view& /*message*/) override
+        {
+            return nullptr;
+        }
         rct_window* OpenIntent(Intent* /*intent*/) override
         {
             return nullptr;
diff --git a/src/openrct2/ui/WindowManager.h b/src/openrct2/ui/WindowManager.h
index 1392b68db9..fe49810854 100644
--- a/src/openrct2/ui/WindowManager.h
+++ b/src/openrct2/ui/WindowManager.h
@@ -30,6 +30,7 @@ namespace OpenRCT2::Ui
         virtual rct_window* OpenIntent(Intent * intent) abstract;
         virtual void BroadcastIntent(const Intent& intent) abstract;
         virtual rct_window* ShowError(rct_string_id title, rct_string_id message) abstract;
+        virtual rct_window* ShowError(const std::string_view& title, const std::string_view& message) abstract;
         virtual void ForceClose(rct_windowclass windowClass) abstract;
         virtual void UpdateMapTooltip() abstract;
         virtual void HandleInput() abstract;
diff --git a/src/openrct2/world/Map.cpp b/src/openrct2/world/Map.cpp
index 2937cec6ef..469de6cd97 100644
--- a/src/openrct2/world/Map.cpp
+++ b/src/openrct2/world/Map.cpp
@@ -1481,7 +1481,10 @@ bool map_can_construct_with_clear_at(
     uint8_t crossingMode)
 {
     GameActionResult::Ptr res = map_can_construct_with_clear_at(pos, clearFunc, quarterTile, flags, crossingMode);
-    gGameCommandErrorText = res->ErrorMessage;
+    if (auto message = std::get_if<rct_string_id>(&res->ErrorMessage))
+        gGameCommandErrorText = *message;
+    else
+        gGameCommandErrorText = STR_NONE;
     std::copy(res->ErrorMessageArgs.begin(), res->ErrorMessageArgs.end(), gCommonFormatArgs);
     if (price != nullptr)
     {