1.Download the Game client
2.Download the 1.4 Version patch
3.Install the game and run the patch
Visit http://www.mycrysis.com/ to receive a Free Trial CD-Key. This Demo CDKey will only be valid for your MyCrysis account, and will allow you to play online for the whole week (from Thursday, April 9th to Friday, April 17th). By the end of the week, your Demo CDKey will be deactivated and you will have to purchase the game to keep playing online.