Tetris （R） & （C） 1985～2022 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. Tetris Logo Design by Roger Dean. Tetris Effect produced and published by Enhance Experience, Inc. Developed by Resonair, Monstars Inc. and Stage Games. All Rights Reserved. Unreal, Unreal Engine and the circle-U logo are trademarks or registered trademarks of Epic Games, Inc. in the United States and elsewhere. All other copyrights and trademarks are the property of their respective owners.