I really like the HUD and how animated every action is, especially the music transition effects. I got some ideas which will probably be updated. Mainly gimmicks, up to you: -An eggmobile spawner that spawns an eggmobile that you can use to enter, hover around and shoot lasers, dash through certain strong walls that only an eggmobile can do. Kind of like the gimmick of the flying saucers in Marble Garden Zone but actually good to use. When hit, eggmobile destroys or maybe Sonic just falls out of the eggmobile while the eggmobile descends down. Destructs when you land on an electric generator after a section (Doesn't hurt Sonic, but is there to allow Sonic to get out). Can be used in maybe the final level or an industrial level. -Non-OP Whisp powers like drill. Underground badniks that when hit, release moles and rings.