
Series Saga
Spike Chunsoft's detective adventure series, starting in 2019. Investigators enter suspects' dreams in timed puzzles, leading to branching stories with strange twists.
One series. Every step.
In release order. Select a game below.

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Play as detective Kaname Date on the case of an elusive serial killer in this thrilling, sci-fi murder mystery.
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Play as detective Kaname Date on the case of an elusive serial killer in this thrilling, sci-fi murder mystery.

Special Agents Mizuki and Ryuki, along with their AI partners Aiba and Tama, are tasked to solve the bizarre Half Body serial killings in this sequel to the critically acclaimed AI: THE SOMNIUM FILES.

Kaname Date and the AI-Ball, Aiba tackle a mysterious case and rescue Iris, an internet idol who has been forced to take part in a dangerous escape game. Examine crime scenes and listen to testimonies in "Investigation". Enter the dream worlds of suspects and key witnesses in "Somnium". Solve puzzles to break out of locked rooms in the new "Escape" sections. By moving between these three sections, obtain the necessary clues to solve the case.