This site from the University of Chile talks about the history of many games played in Chile. It has a short history of each game and a short description of how the game is played. This site is in Spanish: http://www.uchile.cl/cultura/oplath/antologia/origyfolc.html
This site is a collection of games from around the world, including games from Latin America. On this site, they include a short description of the game and possible some pictures.
http://www.topics-mag.com/edition11/games-section.htm
