Random Acts of Kindness are selfless acts performed by a person or a group of people wishing to help others. Those who play this game will learn about kindness and compassion by practicing it.
You can perform random acts of compassion for those you know, those unknown, for the earth, or for yourself. Distinct from Service Projects these acts can be spontaneous. Visit the Gallery of Compassionate Action to learn more and get an overview of possible actions you may perform. Here is an video from Do the Deed that introduces the idea: