If anyone remembers a game called Alien Force, I remade it in flash and as3.
http://eg.jfein.net/space (may have to zoom out to see everything)
arrow keys to move (your the blue dot)
space bar to shoot (shoot the red dots)
at the beginning of the game, if you want to adjust the level you're on, use the [ and ] keys ([ = decrease level, ] = increase)
As levels go on, the aliens will start to shoot more. they shoot at every level besides 1.
You can only have one bullet on the board at a time
You have unlimited lives
don't touch the aliens or you're dead.
Yes, I know, there are some bugs.