diff --git a/source/scripts/engine.js b/source/scripts/engine.js
index f8b8832..674e52f 100644
--- a/source/scripts/engine.js
+++ b/source/scripts/engine.js
@@ -2186,9 +2186,14 @@ gameobject.clone("sprite", {
   sprite: sprite.clone(),
 });
 
-load("config.js");
 
-var prototypes = JSON.parse(slurp("proto.json"));
+if (IO.exists("config.js"))
+  load("config.js");
+
+var prototypes = {};
+if (IO.exists("proto.json"))
+  prototypes = JSON.parse(slurp("proto.json"));
+
 for (var key in prototypes) {
   if (key in gameobjects)
     dainty_assign(gameobjects[key], prototypes[key]);
diff --git a/source/scripts/play.js b/source/scripts/play.js
index c075110..821ea12 100644
--- a/source/scripts/play.js
+++ b/source/scripts/play.js
@@ -1,7 +1,6 @@
-if (load("game.js") === false) {
-  Log.error("No game.js. No game.");
-  quit();
-}
-
 sim_start();
 
+if (!IO.exists("game.js"))
+  load("scripts/nogame.js");
+else
+  load("game.js");