4. Syndicate
Yet another unfairly overlooked game. Most of the gamers skipped playing this game just because it's considered a cheap "rip off" of Deus Ex: Human Revolution. Whilst both are SF shooters, you can't compare the two. Syndicate is not an open world game, and it never was never intended to be. One of its strongest areas is the co-op mode. I so freaking love co-op games, because they're social but still keep that single-player vibe of the game alive. All in all, Syndicate is a great game I would play if I were you. Especially if you are not the typical Call Of Duty one-man army gamer.