Hmm... tried a few times, but game seems broken? Don't see how the double jump is close to being high enough to reach any platforms that are raised. Not sure what the balls are up to either.
Viewing post in Hangman Platformer jam comments
The balls jump force is based on the player's jump force. And late night I did some tuning on the jump force to work fine in the entry version, and my testing routine was bad (only test in editor), and you experienced what happened. Sorry for that.
If you still interested in the gameplay, here is a video: Gameplay video