Super Mario Fusion - A nice fan game with twists

Last year, I played an awesome fan game, which was Streets of Rage Remake, which was basically all 3 Streets of Rage games combined to one super SoR game, and it was actually pretty good and faithful to the legacy of that Genesis series. A Sonic fan game was in the works, Sonic XG, but I don't know what happened to it or whether it was finished or not. Fast forward to this year and I happened to touch upon a Mario fan game that is pretty cool and maybe something that could be amazing. It is called Super Mario Fusion, made by YouTube user JudgeSpear2, and it is a Mario style fan game, but Mario travels to various spots of gaming history other than the Mushroom Kingdom. You may freak out when a Halo level, Mega Man level, Doom level, and a Tetris level is in a fan-made Mario game, but it is pretty cool how it is faithful to both Mario games and the some of the other games I mentioned. New power-ups like the Megaman Mario and Spartan Mario make the game worthwhile along with weapons, bosses, and challenging levels. The game is currently in beta phases, but when it is done, it can be truly special. I tried to run the game at its current beta, but it seems slow to me. Here's a video showcasing the game at its current phase. Check the other videos on the channel for more craziness.