Sonic 1 Brother Trouble v0.5 (S1 Hack) is a specific version of the popular Brother Trouble ROM hack for Sonic the Hedgehog on Sega Genesis. The v0.5 label indicates a particular release stage in the hack's development.  As an S1 hack, it's categorized as a modification of the first Sonic the Hedgehog game.  The version number suggests that this version might have incomplete features or unpolished elements compared to later versions, but it offers a unique snapshot of the development process.

Sonic 1 Brother Trouble v0.5 (S1 Hack)

Sonic 1 Blastless DX