www.freerice.com

Freerice.com is a website created by the same person who started The Hunger Site. It is a vocabulary game with a twist. For every word you guess correctly, the site donates 20 grains of rice (through the UN) to those suffering from poverty and hunger world wide. There is no limit to how much you can play or how much rice you can donate and so far over 14,000,000,000 (14 billion) grains of rice have been tallied up by players. The site began in early October 2007, so it has managed to achieve a lot in a short amount of time.

As you play the game, words are ranked by difficulty and your skill level is calculated based on your performance. Getting a higher level is the addicting part and as the site FAQ tells us “There are 50 levels in all, but it is rare for people to get above level 48″, so good luck.