Games for Change http://www.gamesforchange.org
Used as a testing ground for new games, this site offers single-player and multi-player games focused on social issues, such as human rights, economics, politics, and more. Run a farm, save ocean creatures, or investigate your animal instincts as a wolf. The list of games can be filtered by age range.
TeachPeaceNow http://www.teachpeacenow.org
This site’s mission is to promote attitudes and behavior, which encourage nonviolent conflict resolution, respect for human rights, intercultural understanding and tolerance.