Hi, congrats on your game! :) I really liked your idea, it has a lot of potential for creating new puzzles with new mechanics for the balloon. I completed all the levels, but I took a bit longer on the last one because I hadn't noticed that the balloon could "sit" on the ground and wait for the right moment to move xD
If you have some spare time, please try out my game. It's a classic space shooter from the 80s but with a personal touch. Please leave your honest feedback.