What is the difference between PC games in a box vs. jewel case?

I have several games for my pc. One is I spy and I got it for $9.99 at Target. Then tonight I see it in a box called I spy delux for $20.00. So I looked around and all of the hidden treasure games I have been buying for $9.99 in small jewel cases also come in a cardboard box for $20.00. I read the backs and see no difference. Am I making a mistake? There has to be a difference. Any help is appreciated.

Usually, but not always, the box edition will contain a hardcopy of the game manual, and maybe maps or artwork relating to the game. Whereas the jewel case edition will have the manual as a pdf file on the disc.

WALL-E Hidden Treasure part 1

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