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TETRIS GLOSSARY

Hidden rows

Also called Buffer zone · Vanish zone

Rows above the visible playfield used for spawning and high stacks. Their number and loss rules vary. A piece entering this space is not, by itself, a universal game-over condition.

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ABOVE THE VISIBLE CEILING

The shaded band represents hidden rows. The dashed line is the visible ceiling; this cropped diagram does not specify a universal buffer size.