ibox4d1 4D 4D 1.1. THE BASIC IDEA 4D is a simple game of chance. 1. Pick a 4-dit number from 0000 to 9999, e.g. 0138, 1012, 4318, 7766 or 9991. 2.4d Permutations When playing 4D Ibox, it's essential to understand permutations. Permutations refer to the different ways in which a set of numbers can be arranged. In 4D Ibox, you win when any permutation of