Streetplay.com
Check out this site for some interesting games that are played around the globe in cities and neighborhoods. There are a vast array of games, pictures, slideshows and rules for every game imaginable to be played in any kind of space. There is an exemplary pictorial of the children in action shots displaying ways to participate in street play with and without equipment. There is a list of a complete guide and rules to these games in easy to tour sidebar links. Also, there is a free subscription to the streetplay newsletter.
