: The officially recommended method is to use the ROM from the version of Sega Mega Drive & Genesis Classics
Let’s get the legal disclaimer out of the way first so we can talk about the fun stuff. "Sonic 3 A.I.R." is not a standard ROM download. It is a modern, fan-made executable that acts as a shell. It requires you to legally provide your own ROM of the original 1994 Sonic 3 & Knuckles to work. sonic 3 air rom download android top