The Rubik’s x Tetris Cube 40th Anniversary 3x3 Cube is a limited edition twist puzzle that combines the iconic Rubik's cube with the popular Tetris theme. This special edition toy celebrates the 40th anniversary of both the Rubik's cube and the introduction of the Tetris game. With a compact 3x3x3 size, this unique puzzle challenges your brain and offers hours of entertainment for puzzle enthusiasts of all ages.