Sonic Exe Version 2.0 is a fan-made game, likely a horror-themed modification heavily inspired by the Sonic the Hedgehog franchise. It's not officially produced by Sega.  The original Sonic games are known for their fast-paced platforming action. This fan-made version, however, uses that familiar aesthetic to create a different kind of experience, a horror game with elements drawn from various iterations of the Sonic universe.   The number '2.0' suggests this version is an update and refinement of earlier iterations.

Sonic Exe Version 2.0

Sonic Battle Enhanced