World of Tanks is now offering Clan Wars signups for North American and European players of this MMOTPS. Here's word on what they call a separate game layer: "Clan Wars concept revolves around the Global Map divided into a number of provinces each providing a particular revenue stream, with hundreds of clans fighting for gaining control over them. Comprehensive diplomatic and economic systems will provide a wide array of options to wage war for global domination not only on tank battlefields but at bargaining tables as well."