The Werewolf Game: Mad Land

10 male and female high school students become participants in "The Werewolf Game" in which they are locked up together and made to kill one another with the survivor receiving 100 million yen. Divided into Villagers, Werewolves, and Maniacs, the game begins. Female high schooler, Moe, sets her sights on winning and fully commits herself to the massacre.
(Source: JFDB)
~~ Adapted from the novel "Jinro Gemu" (人狼ゲーム) by Ryo Kawakami (川上亮).