Space to and hold to gain force, let go to fire.
Originally from X-15, he or she did the physics and stuff. There is a bug where the retry button appears at the start, just press until there is no more snowballs, then press space again. I live in Southern California in the U.S. and it is hot! Last time it snowed was about 3 years ago. There is a massive drought, and I really wish that it would snow even a tiny bit, so I guess it influenced my subconscious brain, making me inadvertently make a snow project. I will probably make another snow project soon, but really, it might be a long time after the next one.