Lumosity built a business on a simple idea: a few minutes of focused mini-games every day sharpens memory and attention better than scrolling does. Its library covers dozens of exercises, but the one that hooks people first is the classic pattern-recall drill, watch a sequence light up, then repeat it back. We pulled that single loop out and built Flash Focus, a free version that runs right here in your browser. No install, no signup, no account.
Play Flash Focus now
Tap Start, then watch the pattern and tap it back in order. Best played with sound on.
How to play
Press Start and the first tile flashes immediately, no menus in the way. Watch which tile lights up and listen for its tone, then tap the tiles back in the same order, on a touchscreen, with a mouse, or with your keyboard (each tile has a number, 1 through 6, and every tile is reachable by Tab and activated with Enter or Space). Get the sequence right and it grows by one tile and plays again. One wrong tap ends the run.
Each of the six tiles has its own shape, color, and musical note, so you can play by ear as much as by eye. The tile layout is reshuffled every day from that day’s date, so your “grid” today is different from yesterday’s, and a streak counter tracks how many days in a row you have played. Your best run and your streak live in your browser’s local storage. Nothing you do here leaves your device.
How it compares to Lumosity
Flash Focus keeps the one loop that makes Lumosity’s pattern game satisfying: a sequence that grows by exactly one step each round, instant feedback on every tap, and the specific feeling of a wrong guess being entirely your fault, not bad luck. The daily layout shuffle mirrors Lumosity’s habit of giving you a fresh session each day, and the streak counter is the same nudge to come back tomorrow.
What we left out is nearly everything else Lumosity actually sells. There is no library of dozens of other games covering speed, flexibility, problem solving, and language. There is no personalized training program that adapts difficulty across sessions, no progress dashboard charting your cognitive scores over months, and no Brain Performance Index or peer comparisons. Lumosity is also a subscription product with account sync across devices; Flash Focus is one free page with no account at all.
So when should you get the real thing? If a single memory drill already has you hooked, that is exactly the itch Lumosity is built to keep scratching, with a real curriculum instead of one game. Our version is a free taste of the core mechanic; the app is the full training program.
Get the full app
Lumosity is a free download with in-app subscriptions for the full training library and progress tracking.
Frequently asked questions
Can I play Lumosity in a browser?
Lumosity itself is an app, available on Android and iOS, without a full browser version of its games. Flash Focus, the game on this page, is our own original memory-sequence game inspired by Lumosity’s pattern-recall exercise, and it runs in any modern browser on phone or desktop. For the full app and its other training games, you need to install it.
Is this the real Lumosity?
No. Flash Focus is an original game we built, inspired by the escalating memory-sequence loop that appears across Lumosity’s brain training library. It is not affiliated with, endorsed by, or connected to Lumos Labs in any way. All the shapes, colors, and tones in our version are generated by our own code, and the download links above point to the official app.
Does my score save?
Yes, on your device. Your best run and your daily streak are stored in your browser’s local storage and restored the next time you visit, for as long as you use the same browser on the same device. Nothing is uploaded to a server, and there is no account to lose access to.
Is it free?
Completely. No ads, no purchases, no account, no data collection. Lumosity’s core app is free to download too, though its full training program and progress tracking sit behind a subscription, which is one more reason to try the core loop here first.
Does it work offline?
Once the page has loaded, Flash Focus makes no further network requests, so it keeps working through a dropped connection. For genuine offline brain training with a full library of exercises, the Lumosity app is built for that.
