2015 reporting in and they say, "TitanFall." lol
Nah, but seriously, Halo. Without Halo I don't think there would be an Xbox. Certainly not the first, an not the other two. Or it would be in a different way. I have never seen a single game be the focus of why people bought a console. It was to play Halo (even though many people's moms still call it Nintendo.)
Recently it was Wii for movement/new ways to interact. PS3 for Blu-ray. People bought PS1/PS2 to play everything, not just one specific game. Even Sonic on the DreamCast - people bought it for what it could do, not just a single game.
Even PacMan on the Atari 2600 didn't have the draw that was Halo.







