Use the mouse to control the snake. Try to grab the cheese puffs without crashing into the wall or the mouse. Hold space to pause. This is more useful if you want to adjust the speed slider (hehe... get it? Snake? Speed slider? Just me then?) than if you have to go to the bathroom. It's called ScratchSnake Red because the snake is red. It's also easier to search it. The speed slider is self-explanatory. It makes the snake faster or slower.