Tetris(C)1987 Elorg Original Concept & Design by Alexey Pajitnov
Tetris The Grand Master(C)1998 Elorg Tetris(C) and Tetris
The Grand Master(C)and Tetris(R) and Tetris The Grand
Master TM Licensed to The Tetris Company and Sublicensed to
ARIKA CO., LTD. All Rights Reserved
I.R.S (Initial Rotation System) and T.L.S (Temporary Landing System)
design by ARIKA CO., LTD. G.R.S(Grade Recognition System) design by
BULLET-PROOF SOFTWARE, INC.
and ARIKA CO., LTD.
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