I absolutely love this. Riding balloons to get to a space station: mad and brilliant! It was so much fun trying to dodge those chickens--I love the chicken sprite in ToyBoxJam. It would be really cool to add a way to swing when you're hanging on a balloon, to let you build up a bit of momentum to make bigger jumps, or being able to climb up and down on the strings too.
A short, fun, imaginative, unique game, perfect game jam entry :)