diff --git a/include/conf.h b/include/conf.h
index 9d02f55..d9a064a 100644
--- a/include/conf.h
+++ b/include/conf.h
@@ -14,11 +14,13 @@
 static const int editor_target_fps = 60;
 static const int picker_target_fps = 30;
 static const Color unselected_tile_color = {80, 80, 80, 255};
+static const Color overring_tile_color = {255, 255, 255, 80};
 
-static const int editor_window_width = 396;
-static const int editor_window_height = 224;
-static const int draw_offset_x = -2;
-static const int draw_offset_y = -8;
+#define EDITOR_SCALE 1 /* don't change this yet! */
+static const int editor_window_width = 396 * EDITOR_SCALE;
+static const int editor_window_height = 224 * EDITOR_SCALE;
+static const int draw_offset_x = -2 * EDITOR_SCALE;
+static const int draw_offset_y = -8 * EDITOR_SCALE;
 
 #define PICKER_PADDING 4
 static const int picker_window_width =
diff --git a/include/editing_area/draw.h b/include/editing_area/draw.h
index 0fadd68..61d882f 100644
--- a/include/editing_area/draw.h
+++ b/include/editing_area/draw.h
@@ -6,3 +6,4 @@
 #include <raylib.h>
 
 void level_draw(struct Level level, Texture2D tileset);
+void editor_mouse_draw(int x, int y);
diff --git a/src/editing_area/draw.c b/src/editing_area/draw.c
index 415f001..4d56237 100644
--- a/src/editing_area/draw.c
+++ b/src/editing_area/draw.c
@@ -27,3 +27,9 @@ void level_draw(struct Level level, Texture2D tileset)
 		}
 	}
 }
+
+void editor_mouse_draw(int x, int y) {
+	const int tx = x * TILE_WIDTH + draw_offset_x;
+	const int ty = y * TILE_HEIGHT + draw_offset_y;
+	DrawRectangle(tx, ty, TILE_WIDTH, TILE_HEIGHT, overring_tile_color);
+}
diff --git a/src/editing_area/main.c b/src/editing_area/main.c
index 6f8858f..7424c51 100644
--- a/src/editing_area/main.c
+++ b/src/editing_area/main.c
@@ -11,9 +11,13 @@
 #include <stdlib.h>
 #include <sys/wait.h>
 
+static void init_mouse(void);
+
 int editing_area_main(int argc, char **argv,
                       struct SharedData *shared_data)
 {
+	int mouse_x;
+	int mouse_y;
 	struct Level level;
 	level.data = NULL;
 
@@ -21,6 +25,7 @@ int editing_area_main(int argc, char **argv,
 	InitWindow(editor_window_width, editor_window_height,
 	           "SLE main window");
 	SetTargetFPS(editor_target_fps);
+	init_mouse();
 	/* load textures */
 	const Texture2D tileset = LoadTexture(argv[1]);
 
@@ -31,11 +36,16 @@ int editing_area_main(int argc, char **argv,
 		level_read(&level, argv[2]);
 
 		while (!WindowShouldClose()) {
+			/* update */
+			mouse_x = GetMouseX();
+			mouse_y = GetMouseY();
+
 			/* draw */
 			BeginDrawing();
 
 			ClearBackground(BLACK);
 			level_draw(level, tileset);
+			editor_mouse_draw(mouse_x, mouse_y);
 
 			EndDrawing();
 		}
@@ -64,3 +74,8 @@ int editing_area_main(int argc, char **argv,
 
 	return EXIT_SUCCESS;
 }
+
+static void init_mouse(void) {
+	SetMouseOffset(-draw_offset_x, -draw_offset_y);
+	SetMouseScale(1.0 / (TILE_WIDTH * EDITOR_SCALE), 1.0 / (TILE_HEIGHT * EDITOR_SCALE));
+}