seeing both the "Light" and "SpaceWars" games, I just HAD to learn Allegro. I've been using the tutorials at Loomsoft.net, and they're great. Everything works fine with the moving circle except it leaves a trail of blue (very common newbie problem I bet). I've used double-buffering and all that and I can definetly notice the difference, but the trail is still there. It doesn't mention anything about this in the tutorial. Any help would be greatly appreciated.