Tetris (set 3, Japan, System 16A) (bootleg of FD1094 317-0093a set)（Hack · 日本版）をブラウザでプレイ

Sega’s 1988 Tetris asks the player to build complete horizontal rows while the falling pieces accelerate. One preview piece helps plan the next placement, but this version has neither a hold slot nor an instant hard drop. Its Sega rotation system also lacks wall kicks, so a piece cannot be expected to rotate out of a tight space the way it might in a later game. Keep room around a planned turn and lower a piece only once its orientation is settled. Completed rows disappear and reduce the stack, leaving more room for the next group of pieces.