I just found this online(as in multiplayer through internet ) flash game which is basically like a 2D top-down view shooter game. Really fun and addicting for me. Of course, it has it's fair share of hackers and cheaters. There's a lot of people playing it, easy to find a legit group of your skill level. My name on it is AbsentMindedBob, just hit me up on the game or AIM if you wanna play.
www.stickarena.com