technically mania is a game made by fans soFav official game:sonic mania
Its just a charm of a game and seeing the old stages with some new ones always makes me replay the game again and again
Fangame:sonic after the sequel
Oh boy where do i even start
The soundtrack is awesome
The cutscenes are goofy and nice
Level design on later stages is quite challenging with new things every stage
And that great super sonic fight
Overall a great fangame that i recommend