Hey thanks for he feedback everyone. Design decisions: Dont rotate images - this really kills performance. Try not to scale images - My rough performance test

Hey thanks for he feedback everyone. Design decisions: Dont rotate images - this really kills performance. Try not to scale images - My rough performance tests said: draw 1 scaled image = draw 3 images. As you guessed, Bullet images sprites were not done for performance reasons. I might try and add them again and see what it looks like. I'll experiment with bigger enemies / explosion images / collision box changes. I'll write up an article in the future covering my decisions in more detail. And yes I hate it when HTML5 games kill my CPU I was going to make sure this one didn't do that. andy