There are 3 different modes: Goal score: There is a goal number for how many times you need to press space. Timed: You are choose a certain amount of time to press space, and when the time runs out, you are told how many times you pressed space, and your presses per second. Freeplay: Press space however many times you want, for as long as you want. Also, please DON'T ACTUALLY break your spacebar. Have fun!