How to use this test
Watch the positions
Start with three highlighted tiles on a 4×4 grid. They remain visible for 1.5 seconds. Selection is locked while the pattern is shown.
Select from memory
After the tiles disappear, choose the same positions in any order. A selected correct tile cannot be counted twice. Arrow keys move focus; Enter or Space selects.
Build a larger pattern
A complete round adds one tile. Choose Next pattern when ready. The first wrong selection ends the run and outlines the correct positions. Completing all 16 ends the challenge.
What we check
Each round samples distinct positions from the sixteen available tiles. It generates a fresh pattern rather than extending the last one. Viewing time stays at 1.5 seconds as the pattern grows.
The score is the largest set of positions you recalled completely. Reaching a round does not earn its score; all its highlighted positions must be selected correctly. There is no recall deadline.
What this test can’t tell you
This is an informal practice game, not a clinical assessment or an IQ score. Familiarity, language, device and input method can affect your result.
Something not working?
The tiles do not respond
Wait for the Your turn message. During the viewing phase the grid intentionally ignores selections.
I selected the same tile again
A correctly selected position stays marked and does not count again. Look for another remembered position.
The run stopped after I changed tabs
Leaving the page or window cancels the run so a pattern is not played while you cannot see it. Start again when ready.
Common questions
How is this different from sequence memory?
Sequence memory asks for an ordered series. This game asks which locations were highlighted; the order you select them does not matter.
What is a good visual memory score?
We do not have a representative reference population. Compare your own runs with the same screen size and exposure time.
Is the last round unusually easy?
When all sixteen tiles are highlighted there are no distractors. Completing that final round ends this finite game; it does not establish a memory limit.