T-Spin

Rewards for T-Spins first appeared BPS-involved The New Tetris. The game added a spiff for T-Spins, which would trigger an "avalanche." Henk Rogers implied in his planetgamecube.com interview that it was the mobile game Tetris Battle that inspired the T-Spin's current dominating points and garbage rewards, although T-Spins in a nerfed form found their way into prior guideline games such as Tetris worlds. As of 2008, the Tetris Guideline seems to favor the 3-corner T no kick rulings.

A couple of 3-corner T no kick rulings variations:

Soft drop

Rotate left

Soft drop

Rotate once

Or twice