This thread has turned pretty ugly now. Whats with you lot? Most people in this thread are being very ignorant of other peoples opinions. Both sides are trying to discredit the other game which is silly because I think every game in this thread has innovated in small ways.

But I'll say this. What Halo 3 has done will effect gaming more than Portal. We'll see developers copy various features from the game in future titles so years from now we'll have features that are are mandatory in all games and can say it stemmed from Halo 3. Nobody is trying to copy Portal so it really hasn't changed gaming at all. In that regards, Halo 3 deserves the award more than Portal. But why does it always come down to Portal vs Halo 3. Rock Band should of won.