One of my friends told me to try this mod, unfortunately, it was not up to my expectations. After completing the base game entirely, I can safely say that the levels and overall design of said levels could use some critical work, while it may be true that mystic realm was out at 2.0 or 2.1 era, which probably would be good at the time, does not hold up to today, If I may give suggestions, I think slopes in some of these levels would work rather nicely, such as some sections where they use stairs and some hills that requires jumps, some of the enemy placements and obstacles in levels could be better too. Out of all the levels Aerial Garden was the worst experience out of its entirety, sure its the last level, its supposed to have some challenge I presume, but the challenge does not seem fun and I do not really learn anything other than just having a very precise jump, as a Sonic player (Mainly cause i view sonic as the main experience of the game), Doing this kind of platforming kinda sucks, especially when you have to go max speed to reach certain distances. The final levels in the vanilla experience, like Egg Rock, I viewed as challenging, I died numerous times when I was a beginner, but there are cool things to learn from it, it has unique ways of designing traps and obstacles, which isn't presented in this mod. Some may have a distaste towards what I'm saying, I think this mod can have much more potential, but at its current state it feels rather boring and very short for my play style, please listen and learn from this.