21. Mortal Kombat
Developed by NetherRealm Studios, Published by WB Games
This is how to revive a classic franchise, especially one that hasn't had a good game in years. Mortal Kombat manages to appeal to newcomers to the series, and even diehard fans found little to complain about. The important thing is that fatalities came back, in the rip-your-spine-out-and-eat-it kind of way that we remember so fondly. After all, that's all we ever really wanted.