Echo Blitz
Watch, remember, reproduce — how deep does your sequence memory go?
How to play Echo Blitz
Tiles light up one after another. Watch the full sequence, then tap the tiles back in the same order.
A wrong tap costs a life. Climb as many levels as you can — new twists unlock as you advance, keeping long runs demanding.
What it trains: sequence memory
Echo Blitz targets visual sequence memory: holding an ordered pattern in working memory and reproducing it exactly. Sequences get longer and the twists pile up as you climb, so every run ends right at the edge of what you can hold.
Because levels are endless and mistakes cost lives, your highest level is a clean, comparable record of how much your working memory held today — and a number to beat tomorrow.
What is working memory? →Based on the Corsi block-tapping task
In the Corsi block-tapping task, an examiner taps a sequence on nine blocks fixed in an irregular layout, and you tap the same blocks back in the same order. The sequence starts at two blocks and grows until you can no longer reproduce it. The longest length you manage is your Corsi span.
Echo Blitz keeps the core of that test: fixed positions that light up in order and have to be tapped back in order. It differs in the details. The nine tiles sit in a regular 3×3 grid, every round draws a fresh random sequence, and the length steps up from 3 to at most 7 tiles instead of growing until you fail. Decoy flashes join in from round 5, then double taps, a rotated grid and, from round 31, reversed recall (the backward version of the task), so a high level reflects more than span alone.
Kessels, R. P. C., et al. (2000). The Corsi Block-Tapping Task: Standardization and normative data. Applied Neuropsychology, 7(4), 252–258. doi.org/10.1207/S15324826AN0704_8
Berch, D. B., Krikorian, R., & Huha, E. M. (1998). The Corsi block-tapping task: Methodological and theoretical considerations. Brain and Cognition, 38(3), 317–338. doi.org/10.1006/brcg.1998.1039
Scoring & progression
Runs are endless: you climb levels until your lives run out, and scoreboards track the highest level you reach. Strong runs feed your belt progression in the memory discipline — from white belt toward black — and your place on the global leaderboard.
Echo Blitz FAQ
Is Echo Blitz free to play?
Yes. Echo Blitz runs in your browser with nothing to download, and you can play it without an account. An account only saves your scores, stats and leaderboard place.
How long does a run of Echo Blitz take?
There is no fixed length. Levels keep coming until your three lives are gone, and scoreboards record the highest level you reached.
What do I need to play Echo Blitz?
A modern web browser. A desktop or laptop with keyboard and mouse works best; the game also runs on tablets and phones with touch controls.
Is Echo Blitz the same as the Corsi block-tapping task?
Echo Blitz is built on the Corsi block-tapping task, with some differences. Echo Blitz keeps the core of that test: fixed positions that light up in order and have to be tapped back in order. It differs in the details. The nine tiles sit in a regular 3×3 grid, every round draws a fresh random sequence, and the length steps up from 3 to at most 7 tiles instead of growing until you fail. Decoy flashes join in from round 5, then double taps, a rotated grid and, from round 31, reversed recall (the backward version of the task), so a high level reflects more than span alone.