Guides

How to solve them, and how we build them

Practical techniques for getting faster, honest notes on how our scenes are designed and validated, and a plain explanation of why your eyes miss things that are right in front of them.

Skills · 9 min read

How to get better at spot the difference: 12 techniques that actually work

Twelve practical techniques that cut spot the difference solve times: band scanning, counting, silhouette comparison, blink comparison and knowing when to restart.

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Design · 8 min read

How we design a fair spot the difference puzzle

What fairness means in a spot the difference puzzle: zone size, spacing, contrast thresholds, difficulty tiers and the automated checks every scene must pass before publishing.

Guides · 7 min read

Easy, medium and hard: what actually changes between our difficulty levels

What separates easy, medium and hard spot the difference puzzles: difference count, zone size, contrast, scene density, target times and how to move up a tier.

Guides · 7 min read

Hidden object vs spot the difference: which puzzle suits you?

How hidden object and spot the difference puzzles differ in mechanics, the skills each one trains, how they feel to play, and which mode to choose depending on your mood.

Design · 8 min read

Photo spot the difference: how real photographs become puzzles

How photo spot the difference puzzles are made: choosing source images, which edits work, why bold changes beat subtle tints, and how differences are measured automatically.

Science · 9 min read

The science of visual attention: why your eyes miss the obvious

Change blindness, inattentional blindness, saccades and fixations explained plainly, and what each one means for how you should play a spot the difference puzzle.

Guides · 6 min read

Daily puzzle habits: building a streak that lasts

Why a short daily puzzle beats long weekend sessions, the best time of day to play, how the weekly streak freeze works, and how to recover after a missed day.

Guides · 7 min read

A tour of our six puzzle packs, and which to play first

A guide to the Forest, Reef, City, Sweets, Farm and Desert spot the difference packs: what each contains, how hard it is, and the order to play them in.