Sonic the Hedgehog XA is an open-source fan-game inspired by classic Sonic games from the Sega Genesis. It was built from scratch by a single person using the C language and PSn00bSDK and a lot of tools and scripts created for the sole purpose of building this game. Sonic XA is a game that runs on the PlayStation 1, so to play it, you will need to use an emulator or burn the game to a proper CD-ROM so you can play it on your home console.