Need Help from some Internet Detectives

argghhhh, I cant remember the name of this one alien shooter game. It was this shockwave type alien swarm game. You get a overhead view of player and just take on hundreds of alien swarms, using various weapons like pistol, shotgun, rocket launcher, railgun, and various powerups. The game had some really good effects and there is a full purchase version. Need help thanks

EDIT: very similiar to this game, same concept. http://www.newgrounds.com/portal/view/355964

found it haha
http://en.wikipedia.org/wiki/Crimsonland

that looks interesting, i think I will check it out.