The idea of randomly picking a world every time you die is interesting. The moon level was fun, and it was cool to get thrown into the low gravity world after you've gotten used to the forest world with normal gravity. I think that was my favorite part of the game. The ocean world could have been fun if there had been a swimming mechanic, but as is I wasn't sure what I was supposed to do other than avoiding the fish. I like the idea of the negative pickups, but I feel like they lasted too long and were too easy to avoid. Some of them were fun and challenging, like the one that reverses the world, but others like the camera zoom were just unpleasant. After I picked up a few bad ones, I just started avoiding all of them and never got another. I'd also recommend adding some coyote time to the jumping, just to improve the platforming a little. Overall, it's a pretty decent platformer with some creative ideas that could definitely be improved into a great game. Good work!