Quick Sort
Sort one number at a time using the labels on the two buttons. The rule stays simple and changes only after several cards.
Score 0 · Level 1
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How to play
Sort 20 cards as quickly as you can. A live timer starts with the first card and your finishing time is shown at the end. Levels 1–2 use Odd/Even; later levels use Small/Big.
For entertainment and practice, not a standardized cognitive or medical test.