the system will tell you if the number entered is higher or lower. 4 game modes: in all modes the range is from 1 to 100 with a difference of 4 with a range of 1 - 128 single number: there is only one number to discover 10 numbers in ascending order: there are 10 numbers in ascending order; the smallest is on the left, the largest on the right. 3 by 3 numbers in ascending order: there is an array of 3 x 3 numbers each number has the numbers on the left and above which are smaller. you have an unlimited number of attempts. in the end it says how many attempts have been made and how long it took you. the system automatically communicates the range of the next number. the system automatically discards impossible ranges. if the box has a green background, the number is correct if it is dark red the number to find is smaller if it is orange, the number to find is larger
