I spent a lot of time trying to figure this game out. After a while unable to get past the first room, I decided there must be a bug, so I downloaded the game and it worked! Turns out the solution was as simple as it seemed (I just couldn't pass through the door). And after a while of jumping back and forth between the second level trying to tether the blocks I gave up. Really cool idea, and great art. A tutorial would work wonders.