Games like Chapter Zero: The Angel Island Saga
Sonic Skywind
A Sonic game introducing fast paced combat with limited open world areas involving story progress scenarios and side missions.
Sonic Beyond the Speed
Enjoy this fangame in 2d at full speed and platform. Eggman plans to attack with his air fleet and so that sonic and tails do not bother them he will teleport along with the Chaos Emeralds to places of the past.
Sonic Universe 2
Two months after Sonic, Tails, and Knuckles' adventure in Sonic Universe 1, Robotinik returns. He calls Shadow to help him, but Shadow doesn't accept because he lost badly two months ago... Robotinik doesn't like it and leaves. So Shadow turns good and tries to support Sonic & co. against Robotinik (again!!). Now Robotinik is back stronger than ever! He takes the Master Emerald and leaves! Help Sonic & Friends get the Master Emerald back!
Stealth The Hedgehog
This game is an experimental 3D platformer with weird references and other random stuff.
Sonic Outbound
Sonic Outbound is a Sonic fan-game set one year after Sonic Mania's bad ending where Robotnik had the Phantom Ruby and Chaos Emeralds in possession. After the final battle in the core of the Titanic Monarch, Robotnik was stuck in Little Planet and started collecting the Time Stones and preparing his greatest plan yet.
Sonic Chaos
Sonic Chaos is a fan game and re-imagining of the 1993 Sega Game Gear and Master System platform game of the same name. Based on the current style of 2D classic Sonic games inspired by Sonic Mania, Sonic Chaos updates the 8 bit visuals of the original and adapts a play style more closely resembling the classic 16-bit games.
Sonic: After the Sequel - Omega
Sonic: After the Sequel - Omega is fan-made enhanced version of Sonic: After the Sequel.
Neo Sonic Universe
Neo Sonic Universe is an action game developed and published by Alexandre Martins in 2003.
Sonic Spectre
A 2D Sonic the Hedgehog fangame made with Clickteam Fusion
Sonic Requeset
Sonic Requeset is just your generic Sonic fan game.