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

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

However, an extra block impedes the choice of the upward kick position:

Rotated right

Soft dropped

Rotated left

The following can be performed instead, at least in tetris DS.

Rotated left

Moved right

Soft dropped

Rotated left

Tetris Advance

Minna no Soft Series: Tetris Advance, while implementing SRS, included several bugs including the lack of some wall kicks.

Rotated left

Soft dropped

Can't rotate right

Lockjaw

In Lockjaw, both left and right prefer to kick down rather than up when rotating:

Rotated right

Soft dropped

Rotated left

Arika SRS

Arika SRS (used in TGM3) always prefers to kick up. This is very bad for some setups.