In the Set-to-Zero game, your goal is to set all values on the square board to zero by a sequence of mouse clicks. Every time you click on a positive number, that number is decremented by 1, and four its neighbors are also decremented by 1. If some of the numbers you attempt to decrement are already zeros, those numbers are set to 4. If you'd like a bigger or smaller board, you can change it to any size from 10x10 through 15x15. Enjoy the game!