Very good concept. It would be fun to me if the game started right away instead of a hotkey press and you'd quickly need to build the blocks for the player.
I got a few possible bugs. In the 2nd level, player teleported instantly half the screen towards the goal from the money. Player took a very long time to turn around towards the goal even with all the blocks. 4th level, the player fell inside a box, got stuck there and the game froze, couldn't restart.
Good game!