WOAH THIS IS AWSOME! This is one of the most creative entries I've seen from both a theming and mechanical perspective. The main mechanic is great and feels very fun to control. On top of that, every other aspect of this game is so polished and oozing with personality, especially in aspects many others neglected, like the menus or sound design. I also loved the soundtrack :D
If I had one criticism, it would be with the level design. I find the levels to be a little too open and unchallenging, and it's very easy to get disoriented with the gravity flipping mechanics. I found myself just moving randomly and jumping until I found the exit a lot. I think something as simple as spikes to restrict where the player can go would both guide them and add some much needed challenge.
Also, I really like loved the level complete animation and the intro cutscene, but PLEASE add a skip button.
thank you :)