在美洲殖民地的南端，一场战斗将由一个谁也看不到的战士进行，一个国家的命运将由他决定。《刺客信条III：解放》在《刺客信条III》事件之前的几年里，提供了一个独立的PS Vita独家故事情节。
1765年，随着殖民地的注意力集中在英国人身上，西班牙策划了一个接管路易斯安那州的阴谋。扮演技艺高超的刺客Aveline，为阻止西班牙的阴谋而战斗，一次无声打击。使用为PS Vita定制的控制方案，以slo运动精度干掉敌人，引诱他们进入陷阱，等等。

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In the southern tip of the American colonies, a battle will be fought - and a nation’s destiny will be shaped - by a warrior no one will see coming. Assassins Creed III: Liberation delivers a standalone PS Vita-exclusive storyline set in the years leading up to the events of Assassins Creed III. In 1765, as the attention of the Colonies is focused on the British, Spain hatches a plot to take over Louisiana. Play as Aveline, a highly-skilled assassin, and fight to stop the Spanish plot, one silent strike at a time. Use a control scheme custom built for PS Vita to take out enemies with slo-motion precision, lure them into traps, and more.