I really like to play hidden object games because I think it keeps my brain sharp. I don't spend a whole lot of time on them these days though. Do you play them? Which one is your favorite?
I have played these every once and awhile and you are right they do exercise your brain. Especially the ones where the clue to the item is a riddle you have to figure out first instead of just listing the item. The last one I played was a version of Mystery Case Files.
There are a few games like these online but I get bored after a wile. Xbox games are much, much better. Or first person shooter games, they are my favorite, I've been playing those for years before I got my Xbox.
I used to think hidden object games as for kids but they're not. There's a game on Facebook with hidden objects and it's pretty hard to spot such small things.