This one is an OK little game! I loved the little rope effect and the concept was cute too.
I think I might like it more if the game graphics were scaled up so we could see it better. I had to use my browser's zoom feature to play it. Sound and music would have also helped a lot with the presentation.
If it gets expanded on, I would have really liked to see a way to "come back" from a mistake. Maybe stacking perfectly multiple times in a row could give a "widen" platform to allow building big again. The amount of perfects to "recover" could be based on how big of a chunk was misplaced. It's a bit discouraging to play once you figure out that missing a block makes the whole game harder forever.
Nice little mini game though! :)