diff --git a/demos/space-shooter/main.um b/demos/space-shooter/main.um
index 088c532..a71ccfe 100644
--- a/demos/space-shooter/main.um
+++ b/demos/space-shooter/main.um
@@ -44,7 +44,7 @@ fn init*() {
 		case global::GAME:
 			game::handle()
 		case global::NONE:
-			exit(0)
+			window::requestExit()
 		}
 	})
 }
diff --git a/demos/space-shooter/score b/demos/space-shooter/score
index 405e057..f70d7bb 100644
--- a/demos/space-shooter/score
+++ b/demos/space-shooter/score
@@ -1 +1 @@
-127
\ No newline at end of file
+42
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 2029afb..ac843ba 100644
--- a/src/main.c
+++ b/src/main.c
@@ -122,11 +122,14 @@ th_deinit()
 			umprofPrintInfo(stdout, arr, len);
 		}
 	}
-
+	
 	UmkaStackSlot s;
-	umkaCall(thg->umka, thg->umth_destroy_callback, 0, &s, &s);
+	if (umkaAlive(thg->umka))
+		umkaCall(thg->umka, thg->umth_destroy_callback, 0, &s, &s);
+	if (umkaAlive(thg->umka))	
+		umkaRun(thg->umka);
+
 
-	umkaRun(thg->umka);
 	umkaFree(thg->umka);
 
 	th_audio_deinit();
@@ -145,8 +148,10 @@ run_playground(const char *src)
 	UmkaStackSlot s;
 
 	if (thg->umka) {
-		umkaCall(thg->umka, thg->umth_destroy_callback, 0, &s, &s);
-		umkaRun(thg->umka);
+		if (umkaAlive(thg->umka))
+			umkaCall(thg->umka, thg->umth_destroy_callback, 0, &s, &s);
+		if (umkaAlive(thg->umka)) 
+			umkaRun(thg->umka);
 		umkaFree(thg->umka);
 		thg->umka = NULL;
 	}
@@ -155,10 +160,11 @@ run_playground(const char *src)
 		return 1;
 	}
 
-	int code =
-	    umkaCall(thg->umka, umkaGetFunc(thg->umka, "tophat_main.um", "__th_init"), 0, &s, &s);
-	if (!umkaAlive(thg->umka)) {
-		th_print_umka_error_and_quit(code);
+	if (umkaAlive(thg->umka)) {
+		int code = umkaCall(thg->umka, umkaGetFunc(thg->umka, "tophat_main.um", "__th_init"), 0, &s, &s);
+		if (!umkaAlive(thg->umka)) {
+			th_print_umka_error_and_quit(code);
+		}
 	}
 
 	fprintf(stderr, "inited\n");
diff --git a/src/window.c b/src/window.c
index afeb6bb..f61d405 100644
--- a/src/window.c
+++ b/src/window.c
@@ -66,10 +66,11 @@ init()
 
 	UmkaStackSlot s;
 
-	int code =
-	    umkaCall(thg->umka, umkaGetFunc(thg->umka, "tophat_main.um", "__th_init"), 0, &s, &s);
-	if (!umkaAlive(thg->umka)) {
-		th_print_umka_error_and_quit(code);
+	if (umkaAlive(thg->umka)) {
+		int code = umkaCall(thg->umka, umkaGetFunc(thg->umka, "tophat_main.um", "__th_init"), 0, &s, &s);
+		if (!umkaAlive(thg->umka)) {
+			th_print_umka_error_and_quit(code);
+		}
 	}
 }
 
@@ -97,7 +98,7 @@ frame()
 	thg->target_size = (th_vf2){.w = window_width, .h = window_height};
 
 	UmkaStackSlot s;
-	if (thg->umth_frame_callback != -1) {
+	if (thg->umka && umkaAlive(thg->umka) && thg->umth_frame_callback != -1) {
 		s.realVal = sapp_frame_duration();
 
 		int code = umkaCall(thg->umka, thg->umth_frame_callback, 1, &s, &s);