FREE RICE
Free Rice is an online internet game that donates 20 grains of rice to the World Food Programme (WFP) for every word that is correctly defined.
WFP, the United Nations frontline organization fighting hunger, distributes the rice to the hungry. WFP uses the donations from the site to purchase rice locally, both feeding people in need and stimulating local economies.

Some advantages of free rice are
-Allow you to learn new vocabulary trough games.
-It is s a great site that not only offers a fun and interactive way to improve your knowledge of English vocabulary and grammar (as well as many other subjects), but also enables you to help feed poor and hungry people all around the world at the same time.
-The quizzes are programmed to suit all levels.
-It is a free game, we do no need to pay for it