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The Mamma of All Nightmares, titled Land of the Livid Dead on the world map, is the final level in Rayman Origins. It consists of the fifth and final part of the Land of the Livid Dead, the optional final world of the game. The level has the players in battle Big Mama – a monstrous, mutated nymph. Beating her unlocks in the PlayStation 3 and Xbox 360 versions the hidden trophy/achievement Nothing Lasts Forever. This part of the level is the fortieth and final overall that's included in the Back to Origins mode in Rayman Legends.