itch.io

Interesting mechanic. You could use this mechanic with physics system to create awesome and interesting puzzles. Although the mathematic is used in the game, it could be boiled down to simply duplicating, removing, doubling the size and halving the size of the cube. So in a way, complex mathematics or equations are not used.
Another critic that I would give is that overall the puzzles in the games mainly involved creating a passageway for the player. Adding some puzzles where the player can proceed by affecting the environment can be a good way to improve the game.
Overall, great job, and nice voice acting and animations.