Tetris (R)&(c) 1985-2009 Tetris Holding, LLC.Tetris logo, Tetris theme song and Tetriminos are trademarks of Tetris Holding, LLC.
Licensed to The Tetris Company.Game Design by Alexey Pajitnov. Logo Design by Roger Dean. All Rights Reserved.
Sub-licensed to Tetris Online Japan Inc. All other elements (c) 2005-2009 Tetris Online Japan Inc. All Rights Reserved.
(c) 2009 ENTERBRAIN, INC.