Vasto on 29 November 2013
The demo is out. Its not listed in the games section but if you use Bing on Xbox One and search for Zoo Tycoon Demo then you will see it.
http://www.reddit.com/r/xboxone/comments/1roqtj/zoo_tycoon_demo_out_now/
Also out for Xbox 360
http://marketplace.xbox.com/en-US/Product/Zoo-Tycoon-Demo/66acd000-77fe-1000-9115-d8024d538a9a
