Left 4 Dead 2 - Microsoft Xbox 360

The versus mode keeps things fresh long after you've beaten the campaign co-op, and the weapon variety is solid. Sniper rifles actually feel powerful against the special infected.

Four-player co-op on the original release is still a blast with friends—the melee weapons add a satisfying punch to the chaos. Jumping into a campaign on a weekend night feels just as intense as I remember.

The original release still holds up as one of the most chaotic co-op shooters on the 360, and the four-player campaign never gets old even after all these years. I grabbed a used copy and the disc was in solid shape, loading up without a scratch on the menu screen.