A doom 2 mod that takes place in the Sonic World that has been attacked. Lot of platforming, springs, and more !
In Stardust Speedway Zone Act 3 (Bad Future), you will be against a foe, Metal Sonic.
But... You will need to race against him to win ! And it seems that Eggman doesn't want to see you win this...
Music from Sonic Mania.
For some reasons the video is not in HD, hope it will be later on.
Better quality here :