diff --git a/src/Game/Main.ts b/src/Game/Main.ts
index 757221a..cf198f1 100644
--- a/src/Game/Main.ts
+++ b/src/Game/Main.ts
@@ -22,6 +22,8 @@ export class Main extends LockstepClient<KeyName[], Data> {
 
         subscribe((frame: Data) => {
             const drawSet = new DrawSet();
+            cx.fillStyle = "#000";
+            cx.fillRect(0, 0, canvas.width, canvas.height);
 
             RunRenderBounds(frame, drawSet);