Photo Hunt. Picture Hunt. Find 7. Spot the Differences. Whatever it's called, it's a game in which you are presented two seemingly identical pictures and the goal is to find x number of differences between them. As a child, I played them occasionally in the newspapers. For a while, Parade Magazine, or whatever it was that came with the Sunday edition of NY Daily News, had them and I often played them with my nieces. I even got one niece two such books from Border's.
After getting to know ViquaGames.com's HideNSeek and Mahjong Towers Eternity, I set out on a quest to find a web site that would enable the creation of games using one's own photos. HideNSeek is a great game of the I Spy genre, even if you are stuck with canned objects. Mahjong Towers Eternity allows custom tileset using one's own photos. It would be nice if the game can be played as a Flash game and shareable on blogs, but it's good enough for now. Surely there must be a site where you can upload a photo, edit it and make it different in x places, then save it as a copy. Lastly, the game would be playable online.