Sonic Magenta is a free 2D Sonic the Hedgehog fan game made by Scorbunny Channel.
Sonic Emerald Madness is a boost styled Sonic game that takes its inspiration from Sonic Rush, Sonic Colors and a bit of Mario 64.
Welcome to Sonic Endless Adventure! This is a fan game in which there level created in real time. In the game you will visit the Green hill level, again. You have only 3 lives, losing them, will end the level. During the passage you will encounter Red Star Rings. With it you can open music for the level.
A surrealist platformer based on Super Mario and the Amiga demoscene.
A 2D web browser game which uses aspects of Super Mario 64 and Super Mario Sunshine:
Flappy bird clone for Playdate
Here is the video game “Manic the Lad: Rage Against the Maniac”! Released in 2003 on Windows, it's still available and playable with some tinkering. It's an action game, set in an arcade, platform and fan made themes.