If you're looking for a seamless, high-quality Sonic experience without any tinkering, the official SEGA games are the best choice. These are readily available on the :

Because Sonic XG is a fan game, it is not available on the Google Play Store. You must install it using an APK file from trusted community archives like Sage (Sonic Amateur Games Expo) mirrors, Game Jolt, or specific fan forums. Step 1: Enable Unknown Sources

: Around 2021, indie developers and modders on platforms like Game Jolt attempted to port early Sonic XG builds into cross-platform engines like Construct 2 or GameMaker Studio.