Corsi Blocks — free online memory game
About this game
Nine blocks sit scattered across the screen — no grid, no order. They flash one by one, and you tap them back in sequence. It looks like Sequence Memory's wild cousin, and it is one of the most-used tasks in clinical neuropsychology.
How to play Corsi Blocks
- 1Blocks flash one by one in a scattered layout — watch the order.
- 2Click them back in the same order.
- 3Each level adds one block. One mistake ends the run.
What Corsi Blocks trains
The Corsi block-tapping test is the standard clinical measure of spatial span — the visual twin of digit span, named after Philip Corsi's 1972 thesis. Because the blocks sit in an irregular layout, you cannot lean on rows and columns; you must build a genuine spatial path. Training it strengthens route- and place-memory used every time you retrace your steps.
Category: Working memory · Scoring: Blocks in blocks
What is a normal Corsi block span?
Healthy adults typically reach 5–6 blocks. The task is scored like digit span: the longest sequence you reproduce correctly is your span. Six or more on your first tries is a strong natural spatial memory.
How is this different from Sequence Memory?
Sequence Memory uses a tidy grid where positions rhyme with each other (rows, diagonals). Corsi blocks are scattered on purpose, so chunking into familiar shapes is harder — it forces pure path memory, which is why clinics use it.
Is Corsi Blocks free?
Yes — Corsi Blocks is completely free, with no account, no signup and no downloads. Scores are saved privately in your browser, and you can install MemoryGames as an app from your browser menu if you want it on your home screen.