IIIIITHE1IIIII on 21 July 2012
Halo 2.
The game was/is great, and I still play it. I did, however, expect a lot more after playing the living shit out of Halo: CE. Ever since, my whole view on sequels has been changed. I now don't expect them to be much more massive than their prequels (in a good way), I just expect them to be 'different'.
Other notable mentions:
The Legend of Zelda: Skyward Sword
Mario Kart: Double Dash!!
Metroid Prime 3: Corruption
