Hi all
Recently I met one of the developers of the financial education game:
PlayMoolah.
It is a commercial product, but you can make use of a 24-hour trial (that's not very long, I know, but it could be good use of a wet Saturday).
You can sign up as "parent" then include your child. The child can go on various adventures which help them to learn how to save, spend and manage money. It's aimed at "ages 6 and up". My impression is it could work best with pre-teens.
This is a new product and they would value your feedback. It could be a good way for kids to learn some very important math!
Regards,
Murray