「テトリス」の基板とインストカード（※筆者私物）
TM and (C)1987, Academy Soft-Elorg. All Rights Reserved. Tetris licensed to Andromeda Software Ltd., and sublicenced to Mirrorsoft Ltd. and Sphere, Inc.
(C)1988 Tengen[Atari Games], All rights reserved. Original concept, design and program by Alexey Pazhitnov and Vadim Gerasimov, respectively. Adapted by (C)SEGA
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