Get multiple accounts, create your own guild, and play with your kids! :)
Although it can be played by a single player with the addition of heroes or henchmen to complete, it is most fun if friends or family have accounts that can join together. Players can join other players' guilds, and often, other characters will try to interact with your characters, so keeping an eye on your kids as they play is really a must, especially for the younger ones. I and my kids each have our own account and have made our own guild so we can all help each other, and it has been quite enjoyable for us to play together! Really a lot of fun for all!