WASD to move. Click to grab objects, hold click and un-hold to throw. Space to jump off of walls. you can slightly swim around to move, because there still is air to push off of. just no gravity somehow. Objects have been added.
For the Scratch design studio: Zero Gravity. (Music from Rain World, the music is called: Else 1.) I find the music really calming. I don't know how to add mobile friendly controls.