As you play Freerice and answer questions correctly, banner ads from our sponsors appear on your screen. The money generated from these sponsors is then donated to the World Food Programme, who use it to help the world reach zero hunger.
In the game, these donations are represented with grains of rice. The amount of money generated when a banner ad is displayed on your screen is approximately equal to what it costs for the World Food Program to purchase 10 grains of rice. By playing, you generate the money that pays for the rice (or other food assistance) that WFP gives to people in need.