Removed dead links to Google Drive downloads. Added some clarifying text to make clear that this is only for CDI-format images. Added ROM/ISO information for the most common CDI version.
This is a hack of Sonic the Hedgehog 2 for Sega Genesis. It changes the frequency of music and sound effects making for a different sounding game. Some music is barely recognizable and the game can feel quite different because of it.
The patch is in xdelta format. The ROM should be in BIN format.
ROM / ISO Information:
No-Intro Name: Sonic The Hedgehog 2 (World) (Rev A)