As we previously reported, the upcoming sequel to Geometry Wars: Retro Evolved (called Geometry Wars 2, natch) will feature a 4 player co-op mode! The first title was a blast to play, and the addition of co-op should make the sequel even more enjoyable. Just hope you don't have a seizure or something! To tide you over to the game's release on August 6, check out the gameplay trailer after the break. It's single player, but still worth checking out!