Just played it, what an amazing game!
The idea of traversing the levels twice, while colliding with different blocks, is really cool for a puzzle game, and the the fact that you drop jump-tokens when you jump that you then have to pick back up is a neat twist and adds a level of forward thinking to the game, while also incorporating the theme brilliantly!
The amount of mileage you get from just 3 block types and the jump-token mechanic is really impressive, too. Most gamejam games have 2 or 3 levels showing off the mechanics/gimmicks, but you went above and beyond in adding a s*** ton of levels, and that's excluding the theoretically infinite levels that can be made in the level editor (which in-and-of-itself is mind bending considering the one script limitation)
In conclusion, this game is amazing and, out of the games I played so far, is my current pick for best game of the jam. Congrats, you did a great job!