Yes, there's actually a bunch of Sonic games on Steam. They're easy to miss in the piles of other action games, but 2011's Sonic Generations deserves special notice for its thriving mod community.

Fans have done what Sega won't - clever-clogs modders have released a version of Sonic Unleashed for PC. The free download works as a total conversion mod for Sonic ...

Writer with a particular interest in the obscure. Even though Sonic Generations is over ten years old, its modding scene is still very active, with it constantly providing new ways to play the game.