My 7 and 10 year old boys hardly touch my games, to my disappointment. However, today I installed tournament buttons in xmen, avengers and iron man and they won't stop playing. They are actually interested in what a skill shot is to get extra points. They love putting their names on the board, which they can never do in normal mode because my scores are so high. Best $18 and 2 hrs I've spent in a long time. I haven't even told them what they'll win, they seem content playing against themselves and my wife.
For those who want to attract kids to games, highly recommend these buttons.
Others have similar experience?