Change Detection
Change Detection shows a visual arrangement, briefly hides it, then presents a changed version. Find the item that changed between the two views.
Play Change Detection
Free in your browser. No download required; open the game and start a fresh challenge.
How to play
- Study the first arrangement while it is visible.
- Hold the layout in mind during the brief hidden phase.
- When the grid returns, tap the item that changed.
What to expect
- Rounds use different kinds of visible changes.
- Feedback shows the changed item after your answer.
- Difficulty controls the amount of information you need to compare.
Difficulty
Higher levels add more items and more possible changes, so you must compare more of the scene from memory. The two-view mechanic is identical at every level.
Frequently asked questions
Is Change Detection free to play?
Yes. Change Detection is free in your browser with no download and no sign-up required.
What should I know before playing Change Detection?
Rounds use different kinds of visible changes.
How does difficulty change Change Detection?
Higher levels add more items and more possible changes, so you must compare more of the scene from memory. The two-view mechanic is identical at every level.
Do I need an account to keep my scores?
No. Daily scores and lab games work as a guest. Creating a free account keeps your profile, streaks and Rival history across devices.
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