Here's a little game I made. There's not a lot to it, but it's fun. Try different speeds to see which type of game you like more. Personally I like slow a lot, but a lot of reviewers like fast.
Collect the green asteroids for points and healing. Avoid the rest. Use arrows to move. Fast speed is based more on reaction time, while a slow speed can be more like a moving maze of asteroids. Have fun!