Lonpos 303 Pyramid and Rectangle game, an expanded version of Lonpos 101, consists of colorful connected beads packed in a small box with a clearly-written instruction booklet and easy-to-read diagrams. The purpose is to solve the problems depicted in the book in either the 2D Rectangular format or the 3D Pyramid format. There are 303 preset puzzles to solve, each with varying degrees of difficulty. In total, there are 363,566 possible problems to solve with the game.

This seemingly simple game develops abstract thinking and problem-solving skills as well as three-dimensional thinking. It also exercises visual-spatial skills and fine-motor control. The game can be played alone or with others.