If not, check out these legal alternatives. You might be lucky and already have Sonic 3 & Knuckles in the SEGA Mega Drive & Genesis Classics on Steam. Unfortunately, there's no easy answer to that. The Steam ROM is not available for purchase any more, what now? That's also why you can't just plug in a S3&K ROM hack and expect that to work with S3AIR. Other ROMs than the Steam versions usually don't use the exact same internal layout, so reading anything from those would only produce garbage data that the game can't handle, so it would probably crash right away. This project does not endorse piracy in any way.Īside from that, there's also a hard technical requirement to use that exact ROM: S3AIR loads a lot of data directly from the ROM and expects all of that in very specific locations. Using just any ROM downloaded from somewhere on the internet is not. Getting the Steam version of Sonic 3 & Knuckles and using its ROM is a clean, 100% legal way to get S3AIR running. Why can't I just use any Sonic 3 & Knuckles ROM? If you're at the latest drivers already, you can still switch the game to fail-safe mode, as described in the Manual PDF linked above. You should definitely make sure your graphics drivers are up-to-date. What to do when the game just crashes on startup?Ī common problem is graphics driver issues. For instructions on that, have a look at the Manual PDF linked above. What to do when there's graphics issues with Sonic 3 A.I.R.?Ĭhanging the renderer to OpenGL Software could help. Have a look at the Manual PDF, you can find all information there. How do I install / update Sonic 3 A.I.R.? (Other platforms)

Your existing save game data will be used by the new version as well, as it's stored outside of the actual game installation (see the game's Manual PDF for details).Īfter a quick check if the new version is working, you can safely delete the old game installation. It's as easy as installing the new version, preferrably to a different location than the old installation. How do I update to a new version of Sonic 3 A.I.R.? (Windows) Now you can start the Sonic3AIR.exe there. on your desktop, or your documents folder, etc.). Just download one of the ZIP files for either the stable or preview versions, and extract it to some location on your hard drive (e.g. How do I install Sonic 3 A.I.R.? (Windows)

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