Earlier this month, a series of “attacks” on Ubisoft’s DRM / Authentication servers left players unable to play the recently released PC-version of Assassin’s Creed 2 or the submarine-simulator Silent Hunter 5. Since both of these games require players to remain in constant communication with one of Ubisoft’s servers, players were faced with interruption of service while these servers were either inaccessible or unstable for several days during these attacks.
As a form of compensation for this downtime, Ubisoft has sent out messages to users that were affected by the interruption of service. These messages include a code that can be redeemed for one out of four free games. The games available for free are the H.A.W.X. and Endwar (both from the Tom Clancy series), as well as Heroes over Europe and Prince of Persia (2008).