Interact
There is a good list of games on the Causes of Poverty. I can also recommend an unusual, very American, high-quality and entirely free download:
Food Force |
A major crisis has developed in the Indian Ocean, on the island of Sheylan. We’re sending in a new team to step up the World Food Programme’s presence there and help feed millions of hungry people...
Rather than 'helping people to help themselves', this is very much flag-waving Americans flying in to the rescue. However, children will like it and you can discuss the game after they've played it...