Tetris (R)&(C) 1985～2011 Tetris Holding.Tetris logos, Tetris theme song and Tetriminosare trademarks ofTetris Holding. The Tetris trade dress is owned by Tetris Holding. Licensed to The Tetris Company. Game Design by AlexeyPajitnov. Original Logo Design by Roger Dean. All Rights Reserved.Sub-licensed to Tetris Online, lnc.