The standard Tetris rotation logic is called Super Rotation System. SRS is suited to high-level Tetris play, allowing for many variations on wall kicks and t-spins.

All tetrominoes exist inside a bounding square and rotate about the center of this square unless obstructed. Tetrominoes of width 3 (J, L, S, T, Z) are placed in the top two rows of the bounding square and (for J, L, and T) with the flat side down. I is placed in the top middle row.

 

All tetrominoes spawn in 2 usually hidden rows at the top of the playfield. They are placed in the center of these rows, rounding to the left. Once a tetromino lands, it does not lock until the lock delay expires. The lock delay behavior, called Infinity by the Tetris Company, resets the lock delay whenever the tetromino is moved or rotated. Hard drop is generally mapped to up, which has no lock delay.

There is another common variant called ARS, which was used in Arika's Tetris: The Grand Master games.

The standard Tetris rotation logic is called Super Rotation System. SRS is suited to high-level Tetris play, allowing for many variations on wall kicks and t-spins.

All tetrominoes exist inside a bounding square and rotate about the center of this square unless obstructed. Tetrominoes of width 3 (J, L, S, T, Z) are placed in the top two rows of the bounding square and (for J, L, and T) with the flat side down. I is placed in the top middle row.

All tetrominoes spawn in 2 usually hidden rows at the top of the playfield. They are placed in the center of these rows, rounding to the left. Once a tetromino lands, it does not lock until the lock delay expires. The lock delay behavior, called Infinity by the Tetris Company, resets the lock delay whenever the tetromino is moved or rotated. Hard drop is generally mapped to up, which has no lock delay.

There is another common variant called ARS, which was used in Arika's Tetris: The Grand Master games.

The standard Tetris rotation logic is called Super Rotation System. SRS is suited to high-level Tetris play, allowing for many variations on wall kicks and t-spins.

All tetrominoes exist inside a bounding square and rotate about the center of this square unless obstructed. Tetrominoes of width 3 (J, L, S, T, Z) are placed in the top two rows of the bounding square and (for J, L, and T) with the flat side down. I is placed in the top middle row.

All tetrominoes spawn in 2 usually hidden rows at the top of the playfield. They are placed in the center of these rows, rounding to the left. Once a tetromino lands, it does not lock until the lock delay expires. The lock delay behavior, called Infinity by the Tetris Company, resets the lock delay whenever the tetromino is moved or rotated. Hard drop is generally mapped to up, which has no lock delay.

There is another common variant called ARS, which was used in Arika's Tetris: The Grand Master games, and is well-known.

The standard Tetris rotation logic is called Super Rotation System. SRS is suited to high-level Tetris play, allowing for many variations on wall kicks and t-spins.

All tetrominoes exist inside a bounding square and rotate about the center of this square unless obstructed. Tetrominoes of width 3 (J, L, S, T, Z) are placed in the top two rows of the bounding square and (for J, L, and T) with the flat side down. I is placed in the top middle row.

All tetrominoes spawn in 2 usually hidden rows at the top of the playfield. They are placed in the center of these rows, rounding to the left. Once a tetromino lands, it does not lock until the lock delay expires. The lock delay behavior, called Infinity by the Tetris Company, resets the lock delay whenever the tetromino is moved or rotated. Hard drop is generally mapped to up, which has no lock delay.

There is another common variant called ARS, which was used in Arika's Tetris: The Grand Master games.