🔍 How to play Spot the Difference

By Miguel Arechaga

Spot the Difference is a classic observation game: you have two panels of nearly identical icons and must find the squares that have changed in the copy. It's a perfect game for training attention to detail and focus.

The goal

Find every difference between the Original panel and the Copy as fast as possible. Every time you complete a level, you move on to the next one, with more differences and bigger grids.

How to play step by step

1. Press Start. Two panels appear: the original and a copy with a few different squares.
2. Compare both and tap the square where you spot a change (you can tap it on either panel).
3. If you're right, the difference is marked in green on both panels.
4. If you tap a square that hasn't actually changed, it's a miss and you get a few seconds added as a penalty.
5. Once you find them all, you level up automatically.

Tricks to spot them faster

• Scan by rows: compare square by square from left to right, row by row, instead of trying to take it all in at once.
• Don't guess: every miss costs you time, so only tap when you're sure that square has changed.
• Watch for small details: many differences are icons that look similar to each other; compare them carefully.
• Split the panel into zones: on the bigger grids, check quadrant by quadrant so you don't lose your place.

With practice, your eye gets used to catching changes at a glance, and you'll reach higher levels in less time.

🏆 Level ranking

Spot the Difference has its own global ranking: the highest level you reach is saved. Go to Ranking, the 🕹️ 1 Player tab, choose "Spot the Difference" from the dropdown, and compare your score with other players, synced to your account. For your result to count you need a free account on MundoSudoku (just a username and password, no email required): you can play without one, but without logging in your score won't be saved to the ranking.