What an excellent Tetris Constructible Light Lamp! Tetris, one of the most popular video games of all time is a deceptively simple yet completely addictive game in which players must fit falling blocks together. This excellent Tetris Constructible Light Lamp is an amazing light with 7 interlocking pieces. The neon magic-cube design is sure to bring fun and style to your desktop. The 7 interlocking tetromino pieces can be stacked in any combination, so you can make it look however you want! The light turns on when the pieces are all stacked together and it turns off when disassembled.