If you own the game legally, search your digital libraries or create a backup. If you search the web, use terms like “Sonic 3 and Knuckles combined ROM” – but again, only if you own the original.

The definitive way to experience the blue blur's 16-bit masterpiece on your mobile device is through (Angel Island Revisited). This fan-made remaster by Eukaryot provides a legal, high-performance way to play Sonic the Hedgehog 3 & Knuckles with modern features like widescreen support, 60fps gameplay, and extensive modding. What is Sonic 3 A.I.R. ?

is a standalone engine that "piggybacks" off an original game ROM to stay legal. Here is how to get it running on your phone. The first thing you need is the Android application itself.