Farming Simulator 2011 - Farming Simulator 2012 - Farming Simulator 2013

http://www.farmingsimulator.net

Now it’s possible to breed cattle completing a variety of tasks such as feeding the cows or spreading the dung and liquid manure on the fields. By selling the produced milk to the local dairy you earn additional money for your farm.
Another big improvement is the multiplayer mode by which you can manage your farm together with friends over the Internet or local network.