At Lego.com you can find a puzzle based driving game for kids. Lego City Game features a city made from Lego.
Object is to drive your emergency car through Lego City and help to solve the problem (robbery, fire etc.). Simple but addictive puzzle games for kids where they have to find the route to the place where the emergency happens.
You can also call Lego City Game a Lego maze build with Lego City.