Tom Clancy's Rainbow Six: Vegas 2

A standout tactical shooter with brilliant gunplay, diverse missions, and outstanding AI squad controls, anchored by a full single-player and drop-in co-op campaign that ranks among the best ever. The aggressive enemy AI delivers exhilarating firefights that are brutal but immensely satisfying, especially on harder difficulties. Dated 2008 graphics, dead versus multiplayer, and the annoying weapon-unlock grind are minor drawbacks, but at the budget price it is an easy recommendation.