In 'Alice in Borderland', Arisu, a disillusioned young man, is suddenly transported to an empty, post - apocalyptic - like Tokyo which is the 'Borderland'. Here, the only way to live is by winning the cruel games. Each game has a specific set of rules and a playing card associated with it, representing the difficulty level. The characters face not only the challenges of the games but also moral dilemmas. For example, should they trust other players? Arisu and his friends gradually learn more about the nature of the Borderland and strive to break free from it.
The key elements include the deadly games. These games are the core of the story, determining whether the characters live or die. Another element is the characters themselves, like Arisu and Usagi, who bring different skills and personalities to the survival journey. Also, the playing cards which represent the games' difficulty and nature play a significant role.
Alice in Borderland is not based on a true story. It's a work of fiction that combines elements of adventure, mystery, and survival to create an engaging narrative.
Overall, Alice in Borderland is reasonably faithful to the manga. Some minor details might differ for the sake of the adaptation, but the core story remains intact. There are no major deviations that would change the essence of the original manga.