Ubisoft has announced that the first downloadable content pack for Assassin's Creed 3, titled The Hidden Secrets, is now available for Season Pass owners on Xbox 360 and PC, with a release for PlayStation 3 owners tomorrow. The first of five DLC packs, The Hidden Secrets gives players three new missions to complete that take them from the Mayan Ruins through to the high seas.

The Hidden Secrets for Assassin’s Creed III adds three extra missions, including the Lost Mayan Ruins, the Ghost of War and a Dangerous Secret, for an additional hour of gameplay, taking gamers from the lost Mayan ruins to the high seas. Every successful mission is rewarded with in-game weapons. Gamers will also receive:

Two single-player costumes including the fabled Captain of the Aquila uniform and the traditional Colonial Assassin outfit

Two multiplayer characters including the fearsome Redcoat and the deadly Sharpshooter

The DLC will also be available as a separate purchase on December 11th for PC and Xbox Live Arcade, and December 13th for the PlayStation Network. The first downloadable content pack will release for the Nintendo Wii U at a later date.