Is there always a way to find every difference?

Yes. Each pair is made by the game, which checks that every change leaves a visible patch and that no two changes touch before you ever see it. Nothing else differs.

What loses time and what wins it?

A find banks 1.5 seconds plus up to 2 more when it comes within 6 seconds of the last one, a cleared stage banks 4, and a tap on blank paper costs 4. The clock can never go above 90 seconds.

How long does a game last?

Usually one and a half to four minutes. It ends when the clock reaches zero.

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Twin Postcards

How to play

Play Twin Postcards free online

Twin Postcards is a free online spot-the-difference game showing two postcards of one place, an original and a copy with a few secret changes. Tap each difference on either card before one shared clock runs out. Fast finds bank extra time, and each cleared stage adds a stamp to your album. It runs in the browser on phone or computer, with no sign-in. Places range from rooms and streets to ponds and toy shelves, so each pair looks fresh.

How to play Twin Postcards

Two postcards of the same place lie one above the other, and 3 to 5 things differ on the lower one: something is missing, added, recoloured, moved, bigger or turned round. Tap each difference, on either card.
One 60-second clock runs for the whole game. Every find adds seconds (more when it is quick) and a cleared stage adds more, but a tap on blank paper costs 4 seconds. Pairs get busier and the differences smaller as you go.
LENS circles the area of a difference for 3 seconds: 2 free per game. Every cleared stage collects a postage stamp for your album, 24 in all.

Twin Postcards tips

Tap only when you are sure, because a tap on blank paper takes four seconds off the clock.
Search one area of the picture at a time, such as the top shelf, then move on.
Use the lens ring to narrow a search when stuck, since the clock is shared across all stages.

Twin Postcards questions

Is there always a way to find every difference?: Yes. Each pair is made by the game, which checks that every change leaves a visible patch and that no two changes touch before you ever see it. Nothing else differs.
What loses time and what wins it?: A find banks 1.5 seconds plus up to 2 more when it comes within 6 seconds of the last one, a cleared stage banks 4, and a tap on blank paper costs 4. The clock can never go above 90 seconds.
How long does a game last?: Usually one and a half to four minutes. It ends when the clock reaches zero.

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