Decent, apparently. Locked away (poorly, once again) in the Sonic Generations demo is, you guessed it, power-ups. Power-ups that haven’t been seen in what feels like ages. The lightning, fire and water shields bring back the double jumping, bouncing and air dashing insanity originally introduced in Sonic 3 & Knuckles and we’ve got a video of them in action.
I get this strange vibe that Classic Sonic with the fire shield is how the designers want the game to play all the time.
Thanks again to PolygonJim for his sorcery. Buy the man a reasonably priced donut next time you see him.