Hi ZakariaGhorfati,
Thank you for playing my Game Duo and for the feedback. It's helpful. In regards to adding checkpoints in the Platformer, I had thought of doing that myself and attempted to, following Tutorials. I have to do some more looking around, though, to see if I can find one that works. If and when I do, I'll add checkpoints.
In regards to the maze, and the high sensitivity, sorry about that. I can definitely turn that down. I'd also had a thought of adding settings so people could turn down the sensitivity and volume and stuff. I'll go and look into how to do that and see if I can get it to work on my version of Godot.
Again, thank you for the feedback and letting me know which game you preferred and that you'd like to see more platformer games from me.