Sonic 2 Ashura is a ROM hack of Sonic the Hedgehog 2. 'Ashura' is likely a reference to a particular theme or aesthetic incorporated into the hack. This ROM hack could feature altered levels, new enemies, and a unique artistic style.  The gameplay is expected to be primarily based on Sonic 2, but with distinct modifications.  It is an unofficial fan project.

Sonic 2 Ashura

Sonic 2 Alternate Sequel (Amy Rose)