Level 1 Tries ●●● Best 0

Press Start, then remember the squares that light up.

How to play

Goal

Remember which squares light up, then tap them all.

How it works

Tips

The history of Grid Recall

Tasks like this are used by psychologists to measure visual and spatial working memory: how much a person can hold in mind for a few seconds. Most adults can hold around five to nine items, and practice helps you use clever patterns to remember more.