Nintendo Rotation System

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The Nintendo Rotation System, or NRS, is a rotation system divided by two variants. The right-handed version was used in Nintendo's NES Tetris game and Tetris & Dr. Mario. Tetrominoes spawn with their highest block on row 20.

Right-handed version

Left-handed version was used in Tetris (Game Boy). Tetrominoes enter with their highest block on row 17.

Left-handed version

Games using this rotation system generally have no lock delay.

This rotation system is wallkickless.

Later Tetris games published by Nintendo (Tetris DX, The New Tetris, and Tetris DS) use different rotation systems.

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