Tetris © & © 1985~2023 Tetris Holding. Tetris logos, Tetris theme song and Tetriminos are trademarks of Tetris Holding. The Tetris trade dress is owned by Tetris Holding. Licensed to The Tetris Company. Tetris Game Design by Alexey Pajitnov. All Rights Reserved. Tetris Effect produced and published by Enhance Experience Inc. Developed by Resonair, Monstars Inc. and Stage Games. All Rights Reserved.