This is just grade A fantastic.
It's so awesome that this game emulates the physics in the older Sonic games so well. Emerald Hill runs even better than Sonic 2 thanks to the better hardware.
Egg Garden was very well designed too (The boss kicked my butt a few times). Superb layout, artwork, sounds, everything. It looked like something pulled out of a real Sonic game!
This is really going to turn a lot of heads when it's done Keep going Taxman, and don't stop!