We use natural numbers every time we count something. We can count all our cookies or the number of people in our class. Those are natural numbers, basically one to infinity. Some people consider zero a natural number and some do not. What do you think? Enough about numbers, the game is what is important. Start the game, your cursor now looks like the number zero. It grows as you move it. Do not let it touch another number. Do this for as long as you can. The bigger zero gets, the harder the game becomes!