Kalèdo is a board game about nutrition. (The web site has little flags to display either Italian or English information, but I couldn’t get the English flag to work, either on Firefox or IE. And it’s one of those sites that plays annoying midi music without asking, but at least I got that to shut off.)

The designers did a pilot study for the game’s educational value using hundreds of kids and including a control group, and found that the game increased both knowledge and practice of nutrition. (source) I only read the abstract.

I can’t tell you more, but it looks like roll-move-trivia.