Word Quest Plus (best word search game) Now FREE
This is the best word search game in the App store in my opinion - some people have a little trouble with the UI but the puzzles are great, the different modes are great, and this app feels just like the store bought books that one goes to for some good word search.
Since it is universal, it is really easy to pick out the letters.
And the rush, scroll, and action modes put a great spin on word search.
You can check out this thread here to see some past discussion.
Definitely want to pick this one up!!
The game has been out for a long time, but has been a sleeper. I have played it a lot, and can help with questions if there are any.
GameCenter ID : oldestgamer