I have two boys, ages 6 and 12. They loved this game and had no problem navigating through it on their own. Since my 6 year old cannot read yet, the verbal instructions along the way were just what he needed. They really loved the hunt to find the hidden items and all of the coins.
The only downside, they were able to complete the whole game in about three weeks. I don't know if this is a testament to their gaming skills or if the game just isn't long or tough enough.