diff --git a/src/game.c b/src/game.c
index 3addf119bf..35012ccf73 100644
--- a/src/game.c
+++ b/src/game.c
@@ -877,7 +877,7 @@ static uint32 game_do_command_table[58] = {
 	0x006A61DE,
 	0x006A68AE,
 	0x006A67C0,
-	0x00663CCD, // 20
+	0, // use new_game_command_table, original: 0x00663CCD, // 20
 	0x006B53E9,
 	0x00698D6C, // text input
 	0x0068C542,
@@ -940,7 +940,7 @@ static GAME_COMMAND_POINTER* new_game_command_table[58] = {
 	game_command_emptysub,
 	game_command_emptysub,
 	game_command_emptysub,
-	game_command_emptysub, // 20
+	game_command_change_surface_style, // 20
 	game_command_emptysub,
 	game_command_emptysub,
 	game_command_emptysub,
diff --git a/src/game.h b/src/game.h
index 64a6f02c7d..13520baf58 100644
--- a/src/game.h
+++ b/src/game.h
@@ -42,7 +42,7 @@ enum GAME_COMMAND {
 	GAME_COMMAND_PLACE_PATH, // 17
 	GAME_COMMAND_18,
 	GAME_COMMAND_REMOVE_PATH, // 19
-	GAME_COMMAND_20,
+	GAME_COMMAND_CHANGE_SURFACE_STYLE, //20
 	GAME_COMMAND_21,
 	GAME_COMMAND_22, //To do with text input
 	GAME_COMMAND_23,
@@ -72,7 +72,7 @@ enum GAME_COMMAND {
 	GAME_COMMAND_47,
 	GAME_COMMAND_START_MARKETING_CAMPAIGN, // 48
 	GAME_COMMAND_49,
-	GAME_COMMAND_50,
+	GAME_COMMAND_50, // New banner? (possibly scenery)
 	GAME_COMMAND_51,
 	GAME_COMMAND_52,
 	GAME_COMMAND_53,
diff --git a/src/interface/window.c b/src/interface/window.c
index c7b573f09c..5a2218b827 100644
--- a/src/interface/window.c
+++ b/src/interface/window.c
@@ -1660,7 +1660,7 @@ void window_bubble_list_item(rct_window* w, int item_position){
 */
 void window_resize_gui(int width, int height)
 {
-	if (RCT2_GLOBAL(0x9DEA68, uint8) & 0xE){
+	if (RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_FLAGS, uint8) & 0xE){
 		window_resize_gui_scenario_editor(width, height);
 		return;
 	}
diff --git a/src/windows/game_top_toolbar.c b/src/windows/game_top_toolbar.c
index 710fbaf186..16863fd0b3 100644
--- a/src/windows/game_top_toolbar.c
+++ b/src/windows/game_top_toolbar.c
@@ -477,6 +477,13 @@ static void window_game_top_toolbar_invalidate()
 	{
 		w->disabled_widgets &= ~((1 << WIDX_ZOOM_IN) | (1 << WIDX_ZOOM_OUT));
 	}
+
+	if (RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & PARK_FLAGS_NO_MONEY) {
+		window_game_top_toolbar_widgets[WIDX_FINANCES].type = WWT_EMPTY;
+	}
+	else{
+		window_game_top_toolbar_widgets[WIDX_FINANCES].type = WWT_TRNBTN;
+	}
 }
 
 /**
@@ -509,10 +516,12 @@ static void window_game_top_toolbar_paint()
 	gfx_draw_sprite(dpi, imgId, x, y, 0);
 
 	// Draw finances button
-	x = w->x + window_game_top_toolbar_widgets[WIDX_FINANCES].left + 3;
-	y = w->y + window_game_top_toolbar_widgets[WIDX_FINANCES].top + 1;
-	imgId = SPR_FINANCE;
-	gfx_draw_sprite(dpi, imgId, x, y, 0);
+	if (!(RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & PARK_FLAGS_NO_MONEY)){
+		x = w->x + window_game_top_toolbar_widgets[WIDX_FINANCES].left + 3;
+		y = w->y + window_game_top_toolbar_widgets[WIDX_FINANCES].top + 1;
+		imgId = SPR_FINANCE;
+		gfx_draw_sprite(dpi, imgId, x, y, 0);
+	}
 }
 
 /**
@@ -639,10 +648,24 @@ static void window_game_top_toolbar_tool_down(){
 		RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_TOOL, uint8) = 12;
 		break;
 	case WIDX_LAND:
-		RCT2_CALLPROC_X(0x66CBF3, x, y, 0, widgetIndex, (int)w, 0, 0);
+		if (RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_FLAGS, uint16)&(1 << 0)){
+			RCT2_GLOBAL(RCT2_ADDRESS_GAME_COMMAND_ERROR_STRING_ID, rct_string_id) = 1387;
+			game_do_command(
+				RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_A_X, uint16),
+				1,
+				RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_A_Y, uint16),
+				RCT2_GLOBAL(RCT2_ADDRESS_SELECTED_TERRAIN_SURFACE, uint8) | (RCT2_GLOBAL(RCT2_ADDRESS_SELECTED_TERRAIN_EDGE, uint8) << 8),
+				GAME_COMMAND_CHANGE_SURFACE_STYLE,
+				RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_B_X, uint16),
+				RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_B_Y, uint16)
+				);
+			RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_TOOL, uint8) = 3;
+		}
 		break;
 	case WIDX_WATER:
-		RCT2_CALLPROC_X(0x66CC48, x, y, 0, widgetIndex, (int)w, 0, 0);
+		if (RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_FLAGS, uint16)&(1 << 0)){
+			RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_TOOL, uint8) = 3;
+		}
 		break;
 	case WIDX_SCENERY:
 		window_game_top_toolbar_scenery_tool_down(x, y, w, widgetIndex);
diff --git a/src/world/map.c b/src/world/map.c
index 6ec218f93f..e0204943df 100644
--- a/src/world/map.c
+++ b/src/world/map.c
@@ -707,6 +707,137 @@ void game_command_clear_scenery(int* eax, int* ebx, int* ecx, int* edx, int* esi
 	);
 }
 
+/* rct2: 0x00663CCD */
+money32 map_change_surface_style(int x0, int y0, int x1, int y1, uint8 surface_style, uint8 edge_style, uint8 flags)
+{
+	RCT2_GLOBAL(0x141F56C, uint8) = 12;
+
+	int x_mid, y_mid;
+
+	x_mid = (x0 + x1) / 2 + 16;
+	y_mid = (y0 + y1) / 2 + 16;
+
+	int height_mid = map_element_height(x_mid, y_mid);
+
+	RCT2_GLOBAL(0x9DEA5E, uint16) = x_mid;
+	RCT2_GLOBAL(0x9DEA60, uint16) = y_mid;
+	RCT2_GLOBAL(0x9DEA62, uint16) = height_mid;
+	RCT2_GLOBAL(0x9E32B4, uint32) = 0;
+
+	money32 cur_cost = 0;
+
+	if (RCT2_GLOBAL(0x9DEA6E, uint8) != 0){
+		cur_cost += RCT2_GLOBAL(0x9E32B4, uint32);
+
+		if (RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & PARK_FLAGS_NO_MONEY){
+			return 0;
+		}
+		return cur_cost;
+	}
+
+	if (!(RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_FLAGS, uint8) & SCREEN_FLAGS_SCENARIO_EDITOR) && RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & PARK_FLAGS_FORBID_LANDSCAPE_CHANGES){
+		cur_cost += RCT2_GLOBAL(0x9E32B4, uint32);
+
+		if (RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & PARK_FLAGS_NO_MONEY){
+			return 0;
+		}
+		return cur_cost;
+	}
+
+	for (int x = x0; x <= x1; x += 32){
+		for (int y = y0; y <= y1; y += 32){
+			if (x > 0x1FFF)continue;
+			if (y > 0x1FFF)continue;
+
+			if (!(RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_FLAGS, uint8) & SCREEN_FLAGS_SCENARIO_EDITOR)){
+				if (!map_is_location_in_park(x, y))continue;
+			}
+			
+			rct_map_element* map_element = map_get_surface_element_at(x / 32, y / 32);
+
+			if (surface_style != 0xFF){
+				uint8 cur_terrain = (
+					(map_element->type&MAP_ELEMENT_DIRECTION_MASK) << 3) 
+					| (map_element->properties.surface.terrain >> 5);
+
+				if (surface_style != cur_terrain){
+					RCT2_GLOBAL(0x9E32B4, uint32) += RCT2_ADDRESS(0x97B8B8, uint32)[surface_style & 0x1F];
+
+					if (flags & 1){
+						map_element->properties.surface.terrain &= MAP_ELEMENT_WATER_HEIGHT_MASK;
+						map_element->type &= MAP_ELEMENT_QUADRANT_MASK | MAP_ELEMENT_TYPE_MASK;
+
+						//Save the new terrain
+						map_element->properties.surface.terrain |= surface_style << 5;
+						//Save the new direction mask
+						map_element->type |= (surface_style >> 3) & MAP_ELEMENT_DIRECTION_MASK;
+
+						map_invalidate_tile_full(x, y);
+						RCT2_CALLPROC_X(0x673883, x, 0, y, map_element_height(x, y), 0, 0, 0);
+					}
+				}
+			}
+
+			if (edge_style != 0xFF){
+				uint8 cur_edge = 
+					((map_element->type & 0x80) >> 4) 
+					| (map_element->properties.surface.slope >> 5);
+
+				if (edge_style != cur_edge){
+					cur_cost++;
+
+					if (flags & 1){
+						map_element->properties.surface.slope &= MAP_ELEMENT_SLOPE_MASK;
+						map_element->type &= 0x7F;
+
+						//Save edge style
+						map_element->properties.surface.slope |= edge_style << 5;
+						//Save ???
+						map_element->type |= (edge_style << 4) & 0x80;
+						map_invalidate_tile_full(x, y);
+					}
+				}
+			}
+			
+			if (flags & 1){
+				if (!(map_element->properties.surface.terrain & MAP_ELEMENT_SURFACE_TERRAIN_MASK)){
+					if (!(map_element->type & MAP_ELEMENT_DIRECTION_MASK)){
+						if ((map_element->properties.surface.grass_length & 7) != GRASS_LENGTH_CLEAR_0){
+							map_element->properties.surface.grass_length = GRASS_LENGTH_CLEAR_0;
+							map_invalidate_tile_full(x, y);
+						}
+					}
+				}
+			}
+		}
+	}
+
+	cur_cost *= 100;
+
+	cur_cost += RCT2_GLOBAL(0x9E32B4, uint32);
+
+	if (RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & PARK_FLAGS_NO_MONEY){
+		return 0;
+	}
+	return cur_cost;
+}
+
+/* rct2: 0x00663CCD */
+void game_command_change_surface_style(int* eax, int* ebx, int* ecx, int* edx, int* esi, int* edi, int* ebp){
+	//RCT2_CALLFUNC_X(0x663CCD, eax, ebx, ecx, edx, esi, edi, ebp);
+	//return;
+
+	*ebx = map_change_surface_style(
+		(*eax & 0xFFFF),
+		(*ecx & 0xFFFF),
+		(*edi & 0xFFFF),
+		(*ebp & 0xFFFF),
+		*edx & 0xFF,
+		(*edx & 0xFF00) >> 8,
+		*ebx & 0xFF
+		);
+}
+
 /**
  *
  *  rct2: 0x006EC6D7
diff --git a/src/world/map.h b/src/world/map.h
index 044c8acd75..971681a06c 100644
--- a/src/world/map.h
+++ b/src/world/map.h
@@ -24,10 +24,10 @@
 #include "../common.h"
 
 typedef struct {
-	uint8 slope; //4
-	uint8 terrain; //5
-	uint8 grass_length;
-	uint8 ownership;
+	uint8 slope; //4 0xE0 Edge Style, 0x1F Slope
+	uint8 terrain; //5 0xE0 Terrain Style, 0x1F Water height
+	uint8 grass_length; //6
+	uint8 ownership; //7
 } rct_map_element_surface_properties;
 
 typedef struct {
@@ -192,6 +192,7 @@ enum {
 #define MAP_ELEMENT_DIRECTION_MASK 0x03
 
 #define MAP_ELEMENT_SLOPE_MASK 0x1F
+#define MAP_ELEMENT_SLOPE_EDGE_STYLE_MASK 0xE0
 #define MAP_ELEMENT_WATER_HEIGHT_MASK 0x1F
 #define MAP_ELEMENT_SURFACE_TERRAIN_MASK 0xE0
 
@@ -245,6 +246,7 @@ void map_invalidate_selection_rect();
 void fountain_update_all();
 
 void game_command_clear_scenery(int* eax, int* ebx, int* ecx, int* edx, int* esi, int* edi, int* ebp);
+void game_command_change_surface_style(int* eax, int* ebx, int* ecx, int* edx, int* esi, int* edi, int* ebp);
 
 #define GET_MAP_ELEMENT(x) (&(RCT2_ADDRESS(RCT2_ADDRESS_MAP_ELEMENTS, rct_map_element)[x]))
 #define TILE_MAP_ELEMENT_POINTER(x) (RCT2_ADDRESS(RCT2_ADDRESS_TILE_MAP_ELEMENT_POINTERS, rct_map_element*)[x])