Collaboration Games from the Growing Agile Toolbox is a free e-book written by Karen Greaves and Samantha Laing that proposes ten games to build collaboration in Agile teams.
The 10 games are Broken Skype, Crazy Chat, Collaborative Origami, Listening Game, Movers & Shapers, Human Knot, 123 go, Columbian Hypnotist, Non Musical Chairs, Yes and, Magic Stick, Singing Clapping Numbers. For each game, the book explains what you can learn, what you need to play the game, how to play it and how the authors have used the game.
Book reference: https://leanpub.com/CollaborationGamesToolbox
Growing Agile web site: http://growingagile.co.za/