Remember those little puzzle books from childhood? They were full of word games, brain teasers, and spot the difference challenges and they'd keep kids busy for hours. They were vacation essentials! The funny thing is, they never really lose their appeal and it's just as fun playing these games as adults.
We can recall family road trips simply flying by when we had 'spot the difference' puzzles to keep us busy the whole way. It should be totally acceptable to keep on playing when we're all grown up. The other cool thing is that these types of puzzles really test your intelligence.
Of course, it's now the twenty first century and we no longer use simple paperback puzzle books. But the spirit of the challenge is still there when we use our smartphones instead. Only a true genius can probably get all of these right. The Mona Lisa picture is REALLY difficult!
