Sonic Robo Blast 2

Sonic Robo Blast 2, abbreviated as SRB2, is a fan game for Windows and DOS platforms. It is a 3D platformer developed by a group called Sonic Team Junior, using a modified version of the Doom Legacy source port of Doom, to allow for such things as optional analog control and true room-over-room (something not possible in the standard Doom engine), as well as the standard gameplay elements Sonic games are known for. It has been in the works since 1998 and is currently nearing completion, though several parts of the game are still missing. Sonic Robo Blast 2 is closely inspired by the original 2D Sonic games for the Genesis and attempts to recreate a game with this style in 3D, though it also borrows elements from the current Sonic games, such as Sonic's signature Air Spin Attack. Entirely original to SRB2 is its Multiplayer mode, a variation of classic first-person shooter games with Sonic elements. Due to being built with a modified Doom Legacy engine, the game is also very easily customizable. Custom levels, characters and even source code modifications can be created with the help of external editors.

Crackle Cradle is a 2D sidescrolling platformer/shooter developed by FoxTail. This game entails guiding the selected heroine through various areas, traps, and monsters, relying on a mixture of evasive skills and accuracy with their weapons.

In a world paralyzed by pandemic and unrest, a dark plot is being set into motion. A terrorist group known as the Absolvers, lead by the evil TALBOTT, are plotting to throw the city into chaos. The only ones who can stop them are a sword-wielding amnesiac named Isaac and a gun-toting femme fatale named Layla. Together, they must fight their way across the city to stop the Absolvers and resolve their own personal conflicts with the group. Based on the award-winning indie actioner Lost Phoenix.

Created by Voxel, this is a fan recreation of Sonic X-Treme.

Sonic Color Cursed is a 2D speed based platformer, inspired by the Genesis classics with a 1-bit artstyle! Dr. Eggman is up to his antics again and this time he’s stolen all the color from the planet! Sonic and friends will have to put an end to Eggman’s plans with flying colors! Or else the world will forever cease to have color! There are RGB scales for you to adjust to have your own shade of the game. You can also enable colored outlines for important objects!

A fangame based around the scrapped concepts of Sonic 1, combining some elements from the early prototypes.