Ben 10 - Protector of Earth (Europe) (En,Fr,De,Es,It) is a Nintendo DS game based on the popular Ben 10 animated series. The game follows the adventures of Ben Tennyson and his alien-morphing device, the Omnitrix, as he battles evil aliens to protect the Earth. Players can choose to play as Ben or one of his alien forms, each with their own unique abilities. The game features a range of levels and locations, including the Null Void, an interdimensional realm, and the city of Undertown. The game also features a co-op mode, in which two players can join forces to battle enemies. In Japan, the game is known as Ben 10: Ultimate Alien - Cosmico Kyojin no Gyakushu (ベン10 アルティメットエイリアンコスミコ巨人の逆襲). Ben 10 - Protector of Earth (Europe) (En,Fr,De,Es,It) is a thrilling game for Nintendo DS fans of all ages.