Sonic the Hedgehog for NES is a hack of a hack called Somari. This version is an improvement on the normal version that's out there. Graphics improvement plus Music update.
- New sprite for Sonic.
- spin attack fixed.
- acceleration of Sonic fixed.
- centered screen.
- added animations on some levels.
- If you have 50 rings at the end of the first 2 acts of every zone, you
access the special stage.
- You can get a extra life by obtaining 100 rings.
- New level select screen code:
At the Title Screen press Up, Up, Down, Down, Left, Right, Left,
Right, B, A, B, A, Start.