I tried to play it on Linux in Wine, but it doesn't work very well - don't know if it works better on windows. What I guess is the menu has some white boxes where I expect text to be in, but I can't see any. Somehow I managed to get to the first planet, and throw the ball, but it bounced somewhere and I can't move despite the description saying "WASD movement". Also there's a box at the bottom left saying "press left shift", but that does nothing for me.