The game is set in a huge futuristic water amusement park. Built on the ocean, this park is technology latest word, and is at the first sight the most fascinating and secure construction of all. However, something goes wrong, and seven people - two boys and five girls - become trapped in the park. The danger increases as they face a mysterious virus that brings them on the verge of death. You control two different characters: Takeshi Kuranari, a simple, normal Japanese teenager, and a mysterious boy with amnesia, who cannot even remember his name. The relationship between the characters become more and more tense as the story develops. Will the young people be able to solve the mystery and to escape death?

"Ever 17" is the second game in Kid's Infinity row. The game is not connected to Never7: End of Infinity either by storyline or protagonists, but both games share the same "dreamy", semi-futuristic setting, and their stories are of similar style. The gameplay of "Ever17" is that of a digital novel; the player reads the dialogues and watches the scenes, viewing them as one of the two protagonists, occasionally having to make decision as to what to do next and how to answer to a certain person. Those decisions influence the course of the story and lead to different endings.

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