Wow, that was really cool! Like a genuinely interesting and at times challenging puzzle-adventure type game. I felt like you threw out at me almost every imaginable trick Bitsy's capable of, and it all stuck very well and was fun to interact with. The "time traveling" idea was particularly impressive, I immediately wanted to play through the game again just to see that sweet sweet good ending. That was engaging!
Writing is great, lighthearted, and full of fun little quirks. Also, loved little details, like changing music when you get into the tunnel to sound like it's more muffed.
Overall, very impressive :)