Take a first look at Arma 3 Zeus (Free DLC) - a new form of multiplayer, where improvisation is the key to success! http://zeus.arma3.com
Assume the role of game master and influence the multiplayer experience of others. Wielding an intuitive real-time editor, you can invent new stories, challenges and locations. The result is always unique, always dynamic combat - for both Zeus and, especially, those with boots on the ground. Your rules, your war.
Arma 3 Zeus will be available at the start of Q2 2014 as free DLC for Arma 3.