The installer just wraps the game files (a jar file containing the actual game,  a local jdk to run the game without needing java installed on your machine and two .exe files, one starting the game with and one without a console) and unpacks them, nothing more.

Maybe providing a zip file as an alternative would be an option?

Thank you for the feedback!

The jump stopping to work is odd, I never encountered that. But should be easily fixable, I'll look into it.

The idea of the game is to create and share your own levels, so I hope people will find fun in creating and sharing challenging ones :)

The theme should be represented by the players ability to be deformed (squished) by moving platforms in any direction and it's ability to scale up and down when standing on blocks that are set to this.