Guys, I'm gonna have to go with Super Smash Brothers Melee on this one. No other game has lasted as long, been so over played and yet remained so amazingly intense and entertaining. No other game pushes skill, reactivity, tactics, and friendship to the limit the way SSBM does. Now, I know what all you Halo fanboys are thinking, "Psh, Halo is soooo much better blah blah blah" Halo doesn't hold a candle to this game! No other game has the diverse amount of characters and play strats, and yet easy learning curve.You gotta better game? Let's hear it!That's one vote for SSBM