Incredibly tight boss rush game, with a pretty solid story once it comes together and very, very challenging bosses that'll keep you coming back.

Great ship based pirate game with very enjoyable naval combat and a great gameplay loop. also free

The perfect dungeon crawler. enough said.

The Sims but with zombies. The only proper depiction of zombie hordes in any game I've ever seen.

A phenomenal cover shooter with great gameplay, story, and graphics.

Unsure why this got all the criticism it did, though to be fair I never tried online. Gameplay was smooth and enjoyable, AI was challenging, which is rare for shooters, and it truly felt like a unique shooter

An amazing combination of RPG, RTS, Grand Strategy. Infinite replayability with the incredible modding community. Also see Viking Conquest

A great tactical shooter with a huge amount of replay value with the mods and multiplayer options

A great story-based squad "shooter". Good shooting mechanics for a third person shooter of its day, good squad control, and a pretty solid story. Local multiplayer on consoles is an added bonus

Goldeneye but better in every conceivable way. Great story mode, multiplayer, coop story, AND COUNTER OPERATIVE story mode!