This is definitely one of the more creative twists! I love that you completely re-thought the movement, so that it's not even taking place in a maze.
Maybe I just need more practice with the controls, but I found it a little too frustrating to try to navigate. Seems like I couldn't land on a planet without being immediately tackled by a ghost. I also had the issue of them respawning right on top of me. Basically, I feel like if I used a power pellet, I had to jump/move very quickly/frantically, which doesn't mesh well imo with having to wait until I'm at the right angle to launch off of the planet to where I want to go. So most of the time, I felt like I jumped off at a random angle and basically had no control over where I landed. Maybe if the power pellet lasted a little longer it would help? Or maybe if I had some slight in-space control? Overall, I really wanted to keep playing but got too annoyed to even beat the first level.
Otherwise, I thought your implementation was cool, and the sound design and visuals are very well polished. Good job overall! I know difficulty's tough to get right, so I hope I was helpful and not discouraging!