Wanna Play This? Go Do Some Promoting.

They've already given us two free Assassin's Creed: Brotherhood packs, and now they want something in return. The publisher's promised another free AssBro multiplayer map will be released once the franchise's official Facebook page hits one million "Likes".

Basically, do some of Ubisoft's marketing for them and they'll give you a new map. At the time of writing roughly 43,000 clicks are required. Better get posting around the 'net then, eh?