What is a KO in Tetris 99?
A KO in Tetris 99 is when you knock out another player by sending garbage lines to them, causing their stack to reach the top!
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In Tetris 99, KO stands for knock out, which means you eliminated an opponent by overwhelming them with lines!
KO is just taking another player out by making them top out with your garbage lines.
It's simple: KO = you beat another player by filling up their screen. Sweet victory!
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