Here are 4 simple rules to help you play.
1) Choose the size of the number you would like to hide in the box (There are a range of different sizes of numbers you can choose from).
2) When the game starts, enter your guess for what you think the secret number might be.
3) The device will tell you whether your guess is larger or smaller than the secret number.
4) How many guesses will it take you to work out what the secret number is?
All the promo codes are gone! Please don’t forget to check our giveaway section to see what new promo codes we have!!