Once you have both of these, you can open the ROM file in the emulator and start playing.

To play a Sonic rom hack, you will need to download a ROM file and an emulator. Some popular hacks include Sonic 2 XL, which adds new levels and objects to the classic game Sonic 3 Cz, which introduces a new character and Sonic Battle Gaiden, which changes the rules of the original Sonic the Hedgehog Battle game. These hacks can be played on a computer or game console by using a ROM file or an emulator. Sonic rom hacks are video games that have been modified by fans to create new levels, characters, and gameplay features.