Sonic XG is graphically demanding. It uses real-time shadows and particle effects. Here is the best setup for the experience:
Sonic XG is a fan-made sequel designed to pick up right where the original trilogy left off. After the fall of the Death Egg, Sonic finds himself in a brand-new adventure featuring: 10+ Custom Zones : From the snowy peaks of Peak Panic to the gravity-defying Cosmic Chasm Classic Gameplay : Built on the Sonic Worlds Sonic Xg Android Download
Search for on GitHub or a trusted APK repository. Sonic XG is graphically demanding
Since you are installing outside the Google Play Store: Sonic Xg Android Download
You will never find Sonic XG on the Google Play Store or Apple App Store.
Here's a step-by-step guide to downloading Sonic Xg on Android: