This is Connect4 played on a cube.

The "cube" is about 3 inches on a side and cannot be accurately called a cube since the edges and corners are cut off at 45 degrees. It is made of the same blue plastic as the more common Connect4 game. Each of the 26 sides thus created has a hole in.

The cube is hollow and one side is a door enabling red and yellow pegs to be stored inside the cube. This, and the wrist strap secured to the inside of the cube (stored inside during play), make the game very portable.

The gameplay is similar to Connect4 - place a peg in a hole on your turn. The object is to get four in a row.