Description:

One billion, and death ...? To get a surgical bed for his sister, Meguru has chosen to participate in an underground community. Between illegal gambling and games, he will participate in a nightmare. (Source: GanGan Online)

Description:

There's a game going around Japan called 'Rabbit Doubt'. The premise of the game is that all of the players are rabbits in a colony, and one amongst them is randomly chosen to be a wolf that infiltrated the group of rabbits. Every round, the wolf kills off a rabbit, and every round, the group tries to figure out which of the rabbits is actually a wolf in disguise. Sometimes the kids who play this game decide to meet up in person, and Yuu, Mitsuki, Rei, Hajime, Eiji, and Haruka have done just that. Unfortunately, one of them has decided to take on the mantle of the wolf and has already killed once. Who is the wolf, and can they be stopped before everyone meets a very unpleasant end? (Source: MU) Note: Chapter count includes a special chapter.

Description:

"What is your crime?" From the author of Doubt, it's time for a new terrible game, Judge. Hiro's brother Atsuya is dating Hiro's childhood friend and secret crush Hikari. Hiro's affection for Hikari will lead him to commit an un-punishable crime against his older brother. At least, he thinks it is un-punishable, until he is kidnapped and imprisoned by a group of people wearing animal masks. The judging is about to start! (Source: MangaHelpers)

Description:

Note: This manga was canceled after the author passed away. For his beloved younger sister's treatment, Shinomiya Ryouma is working frantically to raise a billion yen while going to high school. One day, a mysterious woman asks him, "Can you put your life on the line for what you desire?" and after receiving a ticket from her, an accident befalls him! When he wakes up, he finds he's turned into a girl and what's more, he's participating in a "game" where a win means he can reverse his fate but a loss means he'll die instantly! (Source: MangaHelpers)

Description:

Sakai Hiroaki is a high school teenage mastermind with a genius-level intelligence and a lack of interest in anything that is easy to him. During one unlucky day, in an attempt to stop a student from committing suicide, he ends up committing suicide himself. After he awakens, he finds himself not in the real world, nor in heaven, but in purgatory, along with a group of others who did the same. Sakai discovers that he and his peers are subjected to never-ending intense death games in this world for reasons unknown to him, and he tries to find a way to escape. (Source: MU)