The mechanics of the engine feel fair and solid, but we are given the keys on the game's page, z,x, space, comma, unusually, and not told what they do. I spent a few games wandering around and nothing I could reach was any use to me. I did discover that x and comma make a special noise when pressed. Don't think W and A do anything. Background was confusing in that it looked like it might be climbable in some places, but others were just nets collecting snow; non of that did anything but was harmless fun.