I-Spins in SRS

Different rotation systems that approximate SRS apply different wall kicks and floor kicks when the player twists the I tetromino.

Official SRS Edit

Tetris Worlds, Tetris DS and Tetris The Grand Master Ace are based on the Tetris Guideline, including SRS. They have the following behavior:

Rotated left

Soft dropped

Rotated right

But the wall kicks are not symmetric, as Tetris Worlds, Tetris Deluxe, Tetris DS and Tetris The Grand Master Ace prefer to kick up rather than down when rotating left...

Rotated right

Soft dropped

Rotated left

...unless there is an extra block to force a kick down.

Rotated right

Soft dropped

Rotated left

The following can be performed instead. This is a well-known cheat in Tetris DS.