I got the game playing and sat beside him, I guided him through what was what etc, he was enjoying it at first blowing up a few ships then all of a sudden he said, "I'm bored with this, can we shoot something else?"
I told him this is mainly it so he asked to watch a movie instead lol.
Then this morning he wanted to watch a movie but part way through he said, "Can we sink some more ships again," so I fired up the game and this time he was on it for a couple of hours.
He got stuck a few times so I had to put him back in play, he is 8 yrs old by the way.