Bokurano is a tV series anime that premiered in spring 2007, produced by GONZO.

About the production: the story comes from a manga, there are 24 episodes of about 23 minutes and its current status is "finished".

Its main genres are drama, mecha, psychological and sci-fi, with themes such as Tragedy, Ensemble Cast, Super Robot and Death Game.

On AniList, Bokurano has an average score of 73%, a good score, and appears on 47,197 users' lists.

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 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. (Source: Anime News Network)

Official synopsis from AniList.