This one was pretty good. The boost formula gameplay works pretty well with the fast paced and energetic level design going on here. Sonic controlled pretty well, and you can do crazy things with his boost and jump and whatnot. You can pull off a lot of stunts with this fluid movement. Metal Sonic wasn't half bad either, a life bar is definitely a good way to change things up, and I liked that he made Metal Sonic SLIGHTLY OP to compensate. The level design is also very fast, fluid, and has some great pacing. It rewards experimentation with the mechanics and is rather rewarding. There's also a nice cache of secrets lying in wait in a few levels, definitely had fun with it. Although, I'll be honest, The graphics are kinda ugly. The realistic textures do not look good, nor do the MOD.GEN sprites, pretty good otherwise