SonicMT is likely a ROM hack or fan-made modification of a Sonic the Hedgehog game for the Sega Genesis. It's highly probable it features custom levels, sprites, music, or other modifications made by independent developers. As a fan-made project, it is not affiliated with Sega or any major game companies. Its distribution would primarily occur through ROM sharing communities, fan forums, and independent gaming platforms. The gameplay varies depending on the specific nature of the modification, potentially altering many aspects from the original game.

SonicMT

Sonic.EXE mega drive