Serious tactical shooter action. Can be played both in first person direct control mode or in a strategic overseer commanding mode. I preferred the later. Tried to play Ghost Recon Advanced Warfighter in co-op before and it didn't seem terribly well suited to it due to it's slow and serious pace. But it seemed to work better in single player where you can take your time to plan things out without boring a 2nd person. Has also held up surprisingly well for a game of it's age. Pleasantly surprising one, this. On to the expansion packs!