About Spot the Difference

Spot the Difference is a visual-observation puzzle: you are shown two grids that look almost identical, and you have to find every cell that has changed between them. It is a brisk test of attention to detail and visual memory — the differences are easy to miss if you rush.

How to play

• Compare the two grids side by side.
• Click each cell where you can see a difference.
• Find them all to complete the round, then take on the next one.

Tips to find every difference

• Scan systematically — sweep left to right, top to bottom, rather than darting around.
• Compare in small blocks so your eyes hold both versions of one area at once.
• Trust a second look: if something feels slightly off, it usually is.

Why play?

It sharpens visual attention and concentration — the focused, detail-spotting skills that help with proofreading, comparison tasks and staying alert.

Frequently asked questions

What does it train?

Visual attention, concentration and short-term visual memory.

How do I complete a round?

Find and click every difference between the two grids.

Is it free?

Yes, free to play with no sign-up.

Can I play on mobile?

Yes, on any modern browser.