I've gone back and tried again, and I made it to the end this time! The controls were frustrating. I think it would have been much better if there was no momentum to the movement (especially when building bridges) and it was easier to see the faint blue shapes that show what's actually happen. This is a matter of opinion, of course, but I think puzzle games are generally best when implementing the solution is easy after you've figured it out; I don't want to solve the puzzle and then have to deal with finicky physics-y gameplay in order to implement that solution. Still, I'm glad I gave it a second try, because I really enjoyed the level design! Well done