This hack replaces all the badly shaded and horribly inconsistent sprites of the original Sonic 2 and replaces them with much more clean and consistent sprites by Leanne and I. More frames were also added to animations to make them more smooth. Sprite's origins can be found in the readme.
Sonic- https://www.deviantart.com/spinzone/art/Sonic-2-Fixed-Sonic-The-Hedgehog-865561042
Tails- https://www.deviantart.com/leantm/art/Sonic-2-Fixed-Miles-Tails-Prower-865561142
Sonic The Hedgehog 2 (W) (REV01) [f1+3C] (GoodTools)
Sonic the Hedgehog 2 Rev 1 (1992-11-21)(Sega)[h34] (TOSEC)
MD5: 741766fcba77ac5fbf7d7859d5d03303