TrianglyRU/OrbinautFramework ? reverse-engineered prompt

Build me a classic Sonic style game framework in GameMaker that feels fast, light, and very accurate to the original games. I want the core movement, physics, collisions, and object behavior to feel like Sonic 2, with the same kind of animation timing and gameplay loop. Include playable Sonic, Tails, Knuckles, and Amy with her Origins style abilities, plus support for more than one player, with some players controlled by the CPU and others by a person. It should also handle split screen for up to 8 players and let me switch between the different classic game style behaviors where needed.

Please add the classic visual touches too, like layer deformation and palette based fade in and out. Make it easy to use as a base for either a Sonic fangame or an original project, and set it up so it works cleanly in the latest stable GameMaker. If you need to check current docs online while building it, go ahead.