Stratagus was previously an open source project known as 'Freecraft', and its original purpose was to re-create the Warcraft 2 engine to the point of 100% playability. It succeeded in that goal and decided to move on towards other more challenging goals. Stratagus is now a general use open source engine that a large number of games have based themselves upon, such as Wargus, Battle of Survival, InsectWar, and more.