I really enjoyed figuring out how the game played and I think it's super original, I think you did a wonderful job. The graphics are excellent too, though the darkness was maybe too annoying for me at times, but that might just be a personal issue. I found a bug where if I pause the game and resume, I lost the ability to left click to use relics. One more issue I had was that the black hole and see saw is extremely finicky and only seemed to work sometimes, seemingly at random.
Overall, game is really excellent and looks amazing, the atmosphere in particular is really great. Some minor issues but they don't take away from the game really shining.