Simple Games A Form Of Mind Control?

I was doing a series of word searches in a particular book, and noticed that they have certain letters and such around the so-said word you are trying to find that draw your eyes to you word. Let's say you were looking for the word "TRAIL" And around it, there would be some "tr's" And some "ai's" that didn't belong with the actual word. Is this the whole point of word search or could this be an extremely simple form of mind control and we don't even know?
Could this mean if you studied the human brain enough you could create a piece of art that would cause your body to do things against your will? Like say, you look at this picture and your under hypnosis? Or has visual mind control already been mastered? I just thought I'd share this because I noticed it throughout the book.