Co-op has been a staple feature of many Sonic games for decades now. These examples are the best of the bunch.

Since Mania is very easy to build, requiring no additional dependencies ... Q: Will you do a decompilation for Sonic CD (2011) and/or Sonic 1/2 (2013)? A: I already have! You can find Sonic CD here ...

The best 2D platformers: from Sonic Mania to Celeste, here's what to play - It’s not just Mario: there’s a surprising variety ...

Sonic Galactic is a fan game reminiscent of Sonic Mania, appealing to fans of pixel art and classic Sonic gameplay. The game features new playable characters Fang the Sniper and Tunnel the Mole ...

Sonic Mania was developed by PagodaWest Games and ... comprised of reminagined Shadow stages from past Sonic games. The two campaigns combine for 15-20 hours of content across over 150 stages ...

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 ...