Great game overall. I think the in-game map could be improved to show things you cannot get yet, as it did get a bit tedious running all over the place multiple times. 5/5 still.
To clarify: you add the bridge off of the level 1 block to the level 2 block, remove the level 1 block, and the bridge stays connected halfway up the level 2 block.
@nish000: 29 was annoying me too. The "trick" is that you can attach a bridge between a level 1 and level 2 block, then remove the level 1 block and the bridge still stays. Seems rather ridiculous to me, but it works.