Castle Crashers), there was the original Alien Hominid, a free browser run-and-gun game that debuted on Newgrounds. And that original game has now surpassed 20 million play sessions, The Behemoth has announced.
The brain child of Tom Fulp and Dan Paladin, Alien Hominid was built in Flash and released on Newgrounds way back in 2002. It would eventually be ported to the GameCube and PS2 in 2004 (and Europe would see Xbox and GameBoy Advance ports), then to Xbox Live Arcade in 2007. Currently, The Behemoth is working on Battleblock Theater.