Serious Sam 2 in Coop is a babe. but if you feel like a doze of tactic then get
Hidden and Dangerous 2. HnD2 goes for like 15 bucks (Game+Addon, unfrtunitly
only addon has coop)For some reason laely i feel more playing with folks than
against...I must be gettin old

Oh yeah, Vietcong Coop is always a good laugh XD