diff --git a/source/editor.cpp b/source/editor.cpp
index 52147a7..7200fdc 100644
--- a/source/editor.cpp
+++ b/source/editor.cpp
@@ -2,27 +2,57 @@
 #include "editor.hpp"
 
 #include "game.h"
+#include "maps.h"
 
 static bool show_demo_window = true;
-static yeti_t yeti;
+static bool game_focused = false;
+static yeti_t yeti = {};
 static u16 backbuffer[YETI_FRAMEBUFFER_WIDTH * YETI_FRAMEBUFFER_HEIGHT];
 static SDL_Texture *texture = nullptr;
 
+static int selected_map = 0;
+static int highlighted_map = -1;
+static bool map_loaded = false;
+static char game_window_title[256] = {};
+
+static rom_map_t *rom_maps[] = {
+	&map_e1m1, &map_e1m2, &map_e1m3, &map_e1m4, &map_e1m5, &map_e1m6, &map_e1m7, &map_e1m8, &map_e1m9,
+	&map_e2m1, &map_e2m2, &map_e2m3, &map_e2m4, &map_e2m5, &map_e2m6, &map_e2m7, &map_e2m8, &map_e2m9,
+	&map_e3m1, &map_e3m2, &map_e3m3, &map_e3m4, &map_e3m5, &map_e3m6, &map_e3m7, &map_e3m8, &map_e3m9
+};
+
+static const char *rom_map_names[] = {
+	"e1m1", "e1m2", "e1m3", "e1m4", "e1m5", "e1m6", "e1m7", "e1m8", "e1m9",
+	"e2m1", "e2m2", "e2m3", "e2m4", "e2m5", "e2m6", "e2m7", "e2m8", "e2m9",
+	"e3m1", "e3m2", "e3m3", "e3m4", "e3m5", "e3m6", "e3m7", "e3m8", "e3m9"
+};
+
+static void load_map(int n)
+{
+	game_load_map(&yeti, rom_maps[n]);
+	game_goto(&yeti.game, GAME_MODE_PLAY);
+	map_loaded = true;
+	SDL_snprintf(game_window_title, sizeof(game_window_title), "Game Window (%s)", rom_map_names[n]);
+}
+
 static void editor_yeti_tick(void)
 {
 	void *pixels;
 	int pitch;
-	const bool *keys = SDL_GetKeyboardState(nullptr);
 
-	yeti.keyboard.state.up = keys[SDL_SCANCODE_UP] || keys[SDL_SCANCODE_W];
-	yeti.keyboard.state.down = keys[SDL_SCANCODE_DOWN] || keys[SDL_SCANCODE_S];
-	yeti.keyboard.state.left = keys[SDL_SCANCODE_LEFT];
-	yeti.keyboard.state.right = keys[SDL_SCANCODE_RIGHT];
-	yeti.keyboard.state.a = keys[SDL_SCANCODE_RCTRL];
-	yeti.keyboard.state.b = keys[SDL_SCANCODE_SPACE];
-	yeti.keyboard.state.l = keys[SDL_SCANCODE_A];
-	yeti.keyboard.state.r = keys[SDL_SCANCODE_Z];
-	yeti.keyboard.state.select = keys[SDL_SCANCODE_ESCAPE];
+	if (game_focused)
+	{
+		const bool *keys = SDL_GetKeyboardState(nullptr);
+		yeti.keyboard.state.up = keys[SDL_SCANCODE_UP] || keys[SDL_SCANCODE_W];
+		yeti.keyboard.state.down = keys[SDL_SCANCODE_DOWN] || keys[SDL_SCANCODE_S];
+		yeti.keyboard.state.left = keys[SDL_SCANCODE_LEFT];
+		yeti.keyboard.state.right = keys[SDL_SCANCODE_RIGHT];
+		yeti.keyboard.state.a = keys[SDL_SCANCODE_RCTRL];
+		yeti.keyboard.state.b = keys[SDL_SCANCODE_SPACE];
+		yeti.keyboard.state.l = keys[SDL_SCANCODE_A];
+		yeti.keyboard.state.r = keys[SDL_SCANCODE_Z];
+		yeti.keyboard.state.select = keys[SDL_SCANCODE_ESCAPE];
+	}
 
 	game_loop(&yeti);
 
@@ -44,6 +74,8 @@ void editor_init(void)
 	yeti_init(&yeti, backbuffer, backbuffer, textures, palette);
 	yeti_init_lua(&yeti, YETI_GAMMA);
 	game_init(&yeti);
+
+	load_map(0);
 }
 
 void editor_main(void)
@@ -72,10 +104,45 @@ void editor_main(void)
 	if (show_demo_window)
 		ImGui::ShowDemoWindow(&show_demo_window);
 
-	// game window
-	ImGui::SetNextWindowContentSize(ImVec2(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT));
-	if (ImGui::Begin("Game Window", nullptr, ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse))
+	// rom map select
+	if (ImGui::Begin("ROM Maps", nullptr, ImGuiWindowFlags_None))
 	{
+		if (ImGui::BeginListBox("Maps"))
+		{
+			for (int n = 0; n < IM_ARRAYSIZE(rom_maps); n++)
+			{
+				bool is_selected = (selected_map == n);
+				ImGuiSelectableFlags flags = (highlighted_map == n) ? ImGuiSelectableFlags_Highlight : 0;
+
+				if (ImGui::Selectable(rom_map_names[n], is_selected, flags))
+					selected_map = n;
+
+				if (is_selected)
+					ImGui::SetItemDefaultFocus();
+			}
+
+			ImGui::EndListBox();
+		}
+
+		if (ImGui::Button("Load Selected Map"))
+		{
+			load_map(selected_map);
+		}
+
+		ImGui::End();
+	}
+
+	// game window
+	if (map_loaded)
+	{
+		ImGui::SetNextWindowFocus();
+		map_loaded = false;
+	}
+
+	ImGui::SetNextWindowContentSize(ImVec2(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT));
+	if (ImGui::Begin(game_window_title, nullptr, ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse))
+	{
+		game_focused = ImGui::IsWindowFocused();
 		ImGui::Image((ImTextureID)texture, ImVec2(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT));
 		ImGui::End();
 	}