TETRIS GLOSSARY
Perfectris
An eighteen- or nineteen-line Zone result in Tetris Effect. Despite the name, it is not the same thing as an empty-board Perfect Clear.
View in the A–Z glossary →Related terms
Zone →
Tetris Effect's mechanic that pauses normal falling and accumulates completed rows at the bottom temporarily. Named results such as Octoris and Ultimatris describe the accumulated clear. It is not a Stacking Lab mode.
Perfect Clear →
A line clear leaving no locked blocks anywhere on the board. It can use one or several clearing rows; four lines cleared is not automatically a PC. Bonuses depend on the game.