Thanks for checking it out. :) The key to jumping high is to use the springy force of recovering from a jump or fall to give an extra boost to your jump. In other words, the best time to jump is shortly after you hit the floor. So, you kind of have to jump repeatedly to build up your bounciness. If I were to return to this game, I would probably try to add some sort of feedback to help guide the player into understanding this mechanic/principal, since it seems like a lot of players didn't get it.