https://wccftech.com/free-pc-games-ac-blackflag-worldconflict/

Ubisoft is offering Assassin’s Creed IV Black Flag and World in Conflict on PC for free this month to celebrate two big anniversaries.

In honor of the tenth anniversary of the Assassin’s Creed series, Black Flag will be available through Uplay for free from December 12 (6AM PST) through December 18 (2AM PST). In addition, World in Conflict and the Soviet Assault expansion are also being offered for free to celebrate the game’s 10th anniversary. The title and its expansion are downloadable from Uplay free-of-charge from December 4 (9AM PST) through December 11 (2AM PST).