Spot the difference

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Example of a spot the difference puzzle. There are 15 differences between the two pictures.
Photo version of Spot the Difference puzzle.

Spot the difference is a type of puzzle where players must find a set number of differences between two otherwise similar images, whether they are illustrations or photographs that have been altered with photo manipulation. Spot the difference games are also known as photo hunt games, and are commonly found in activity books for children or in newspapers.

The solution to the puzzle is often listed nearby or in an accompanying answer page of a puzzle book.

Spot the difference puzzles can be viewed much the same way as an autostereogram. Stereopsis, such as crossing ones eyes, will reveal any differences in the two illustrations as floating images.[1]

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