Scan 25: The Schulte Table, and How to Get Faster at It 👁️

The rules

Twenty-five numbers scattered in a 5×5 grid. Tap 1, then 2, then 3, all the way to 25, as fast as you can. Tapping the wrong number costs you time.

The technique: stop looking

The instinct is to scan — eyes sweeping the grid cell by cell, hunting for the next number. That's the slow way, and almost everybody does it at first.

The fast way is to fix your gaze near the centre of the grid and stop moving it. Let your peripheral vision do the finding. It feels wrong, and for the first few attempts you'll be worse — then something clicks and numbers start appearing without you having searched for them.

The reason is that eye movements are expensive. Each saccade plus the fixation after it costs roughly 200–300 ms, so a search that takes eight jumps costs two seconds regardless of how quickly you recognise the digit. Peripheral vision resolves digits poorly, but well enough for a large high-contrast numeral — and it processes the whole grid at once instead of one cell at a time.

Two smaller gains: don't verify (once you've tapped, move on — checking costs a fixation), and keep a soft focus rather than a hard stare, which widens the useful field.

What counts as a good time

For a 5×5 grid, most people land between 35 and 60 seconds on a first attempt. Under 30 is solid. Under 20 is fast. Practised players get into the low teens.

Treat published averages sceptically, though — screen size, grid size, whether you tap or click, and even your distance from the screen move the numbers a lot. Your own trend across a week is the only comparison that means anything.

About our version

99 levels across 6 modes, including reverse order, alternating colours and larger grids for when 5×5 stops being interesting. Your times are kept on your device so you can see the trend.

It runs in your browser, works offline once loaded, needs no account, and costs nothing.

Questions people actually ask

What is a Schulte table?
A grid of shuffled numbers that you find in sequence as fast as possible. It's been used since the 1950s as a measure of visual search speed and attention distribution.

What is a good Schulte table time?
On a 5×5, under 30 seconds is solid and under 20 is fast. Practised players reach the low teens, but the comparison that matters is against your own previous times.

Does a Schulte table improve peripheral vision?
It trains you to use peripheral vision more effectively during a search task, and you will get measurably faster. Whether that transfers to reading speed or anything else outside the grid is not well supported, despite what speed-reading courses claim.

Keep reading

• Color Clash: The Stroop Test as a 60-Second Game 🎨 — The word BLUE printed in red ink. You have to say red, and your brain will fight you the entire time. Ninety years of psychology, in sixty seconds.
• Brain Training Games: Focus, Memory and Reaction 🧠 — A Schulte table, a Stroop test, a memory sequence, a reaction timer and mental arithmetic — five games built around a number you can try to beat tomorrow.
• Reflex: What's Your Reaction Time? ⚡ — Wait for green, tap. Typical is around 250ms, good is under 200, and anything under 120 means you guessed — here's why.