Often times in game design, you miss the small things like 'how high does the player jump' and designing the tutorial of the game 

Each face 10x10
- Keep in mind that players can jump to a space 3 cubes ahead of them (jump height of 4)
- A short tutorial route that helps the players move from space to space teaching the simple platforming the game has
-- then after they reach the corner, they will see the whole thing was a cube that rotates!

- the rotation will then pair into a room with no exit, so when they leave the from the cube into a blocked room with no exit, so they must learn to rotate the cube in order to progress.

Also: The Ice tile is looking extra smooth.

Building in that tutorial into the game's first few minutes - now thats good game design!