So after a week's work, here is my first completed flash game: Astravoid.
The object of the game is to maneuver a flying saucer through an endless asteroid field for as long as possible. You can collect stars to earn additional points, or if you're lucky, earn additional lives. You start with 3 lives; lose them all and it's game over.
The game gets faster the longer you play, so before too long you'll be needing insane reactions to avoid all those asteroids!
Use the arrow keys or WASD keys to move the saucer.