Ubisoft has announced that it is launching a new application on Facebook. Called Assassin’s Creed: Project Legacy, it ties in uniquely to the upcoming Assassin’s Creed: Brotherhood.

This initiative is part of Ubisoft’s “Companion Gaming” plan, whereby players have multiple points of entry for an IP. The Assassin’s Creed: Project Legacy, will let users earn content and XP in Assassin’s Creed: Brotherhood and playing Brotherhood will let users unlock 25 additional missions in Project Legacy.