TETRIS GLOSSARY
Rotation system
The rules defining orientations, pivots and kick tests. SRS, SRS+ and ARS are not interchangeable. Check the system before practising a twist copied from another game.
View in the A–Z glossary →Related terms
Game rules →
The selected movement and spin-recognition behavior. TETR.IO and Tetris 99 options affect which rotations and spins the trainer accepts. They do not turn the trainer into those games' complete versus or scoring systems.
Wall kick →
A positional adjustment tested when a rotation would collide. Kicks can move pieces beside walls or around stack blocks, and some lift them. The game tries defined offsets in order, not arbitrary nearby gaps.