Sonic the Hedgehog 3: Angel Island Revisited is a fan-made game. See Fan Games.
Sonic the Hedgehog 3: Angel Island Revisited (also known as just Sonic 3 A.I.R) is a 2019 PC fan-remake of Sonic the Hedgehog 3 & Knuckles for the Sega Genesis, developed by Eukaryot. It provides many enhancements over the original game, such as widescreen support, 60FPS at all-times, various bug-fixes and other additions.
To play the game, the player must select a Sonic 3 & Knuckles ROM from their computer.