This here's gotta be one of the top Sonic games. It really shows what 3D Sonic can be when it's not shooting itself in the foot with unfinished releases and poorly thought-out gimmicks. Sonic Adventure 2 presents a nice balance of challenge and enjoyability, even with the odd cheap death hither and thither due to engine issues.

TL;DR
It's good, so play it, you useless lout.

eeeeeerrrrrgggg TF2 ITEMS
On the other hand, here we have a nicely presented, well written poker game. Get your damned items, but don't just stop there and never touch the game again.

Masochism. Plain and simple. Super Meat Boy brilliantly recaptures the essence of the NES era of gaming. From the first straightforward levels to the physics-defying gravitational rollercoasters of the later worlds. Play this game.