Well done! The music was definitely a huge highlight for me, I sat in the main menu just to make sure I could listen to the entire track. The art was also very nice. I have a few suggestions for the gameplay similar to some of the other commenters. 1) The black hole obstructing your vision when it is closely behind you is a little problematic. Perhaps adding some sort of indicator that the black hole is close and adding face culling to the inside of the cube could be a fix. 2) I think that being chased down in a maze that is pretty open ended can be a bit frustrating. It felt bad to lose when I would reach a dead end and couldn't avoid the black hole. Perhaps adding a bit of linearity(closer to an endless runner maybe?) so that getting to a dead end is less punishing would be cool. 3) Maybe a gravity switch animation would be nice. The instant change in position was a bit disorienting for me and I didn't realize immediately that I was just going from floor to ceiling. None of those were game ending issues for me though and I enjoyed playing!