Sonic Spectre

Sonic Robo Blast is an early Sonic fan game from 1998, created by Sonikku, real name Johnny Wallbank, of Sonic Team Junior. It is one of the earliest Sonic fangames to exist and led to the founding of Sonic Team Junior as well as the eventual creation of it's sequel, Sonic Robo Blast 2.

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 the Hedgehog 3D is a free fan game about a famous SEGA mascot, Sonic, and it is made on Build Engine with additional EDuke 32 port. The game was inspired by two classic Sonic series: Mega Drive/Genesis and Sonic Adventure series.

Sonic Advance Revamped is a remake and reimagining of the original Sonic Advance on the GBA using the Sonic Worlds Delta engine; it's a passion project designed to be the definitive way to play Sonic Advance, with better hazard placement, a 16:9 aspect ratio, patched-up levels and bosses, completely redesigned Special Stages, the smoothest sprites from each GBA Sonic title (with some special cases and custom sprites here and there), re-implemented unused/beta elements, and true classic Sonic controls to make the game feel even better. Features set for the future include an exclusive Team Chaotix Mission Mode, 8 Unique Playable Main Characters (7 of which are playable in this Demo), a fleshed-out Tiny Chao Garden, New Levels and Music Tracks, and more! For this particular Demo, Sonic's Insta-Shield is swapped-out for his Drop Dash! This move will be an early unlockable in the final version.

A Sonic fan game set in the SatAM universe.

A Sonic game introducing fast paced combat with limited open world areas involving story progress scenarios and side missions.

Sonic Requeset is just your generic Sonic fan game.

Neo Sonic Universe is an action game developed and published by Alexandre Martins in 2003.

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!