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.How to Play Grand Dragon 4D . Players should choose 4 - 6 numbers from 1 to 49 to play GD Lotto. For example 1661, 1696, 0936, 3477, and 5133.