This online game is more edutainment than entertainment.

Designed to teach children about the carbon footprint of the foods they eat, My Bento! allows players to create bento-style lunchboxes, choosing from a variety of rice, foods, and side dishes.

After the bento is snugly packed, the game tells you how many parking spaces’ worth of trees it would take to offset the carbon emissions created by the harvest and production of your food.

I can’t call this game “fun”—more like guilt-inducing!—but it’s cleverly designed and reflects an important point in the global food market today.