Bokurano (2007)

During a summer camp, 15 children, 8 males and 7 females, find a grotto by the sea. Deep within they discover working computers and some electronic equipment, and later the owner, a man called Kokopelli. Kokopelli claimed to be a programmer working on a brand new game, in which a large robot has to defend the Earth against fifteen alien invasions. He persuades the children to test the game and sign a contract. All but one of them signs; barely a moment later they mysteriously awaken on the shore believing what happened was just a dream.

Released April 8, 2007 552 min Episode 23 min 17+

Genres: Animation, Anime, Anime: Mecha, Anime: Psychological, Anime: Seinen, Drama, Sci-Fi, Science Fiction

Keywords: tmdb.anime, mdblist.has-trailer, tmdb.mecha, tmdb.death-game, imdb.primarily-child-cast, imdb.summer-vacation, imdb.robot-sci-fi + 33 more, imdb.mecha-anime-animation, imdb.fifteen-children, imdb.anime-animation, imdb.mecha, imdb.survival-adventure, imdb.psychological, imdb.seashore, imdb.middle-school-student, imdb.group-of-children, imdb.asian-comics-literature-on-screen, imdb.tragedy, imdb.psychological-horror, imdb.human-piloted-robot, imdb.seinen-anime-animation, imdb.robots, imdb.angst, imdb.seinen, imdb.japanese-comics-literature-on-screen, imdb.piloted-giant-robot, imdb.psychological-thriller, imdb.based-on-manga, imdb.cave, imdb.giant-robot, imdb.gadgets, imdb.mysterious-man, imdb.high-tech, imdb.suspense, imdb.survival, tmdb.psychological, imdb.for-grown-ups-animation, imdb.hand-drawn-animation, imdb.child-protagonist, imdb.psychological-drama