Tetris & (C) 1985～2009 Tetris Holding. Tetris logo, テトリス,デカリス, Dekaris, Tetris theme song and Tetriminos are trademarks of Tetris Holding. Licensed to The Tetris Company. Game Design by Alexey Pajitnov. Logo Design by Roger Dean. All Rights Reserved. Sub-licensed to SEGA. Certain original characters and music owned by SEGA Corporation: (C) SEGA