Project Moon’s deck-building RPG Library of Ruina has been recognized by Guinness World Records as the title with the longest videogame campaign or story, with a main campaign length of around 113 hours as of June 2026.
Record Details
The official Guinness listing for “Longest videogame campaign/story” credits Library of Ruina with approximately 113 hours to complete the main campaign. This exceeds the previous record holder, Persona 5 Royal, by about 12 hours. The measurement focuses on the primary story path rather than optional content or full completionist runs.
Key points from the record:
- Record dated to June 2026.
- Main campaign only, not side content or 100 percent completion.
- Project Moon publicly announced the recognition on October 27, 2026.
About the Game
Released in 2021, Library of Ruina is a turn-based, deck-building RPG in which players manage a library and battle visiting guests. Defeated guests become books that expand the library’s collection. The game is a direct sequel to Project Moon’s 2018 horror management simulator Lobotomy Corporation and shares a setting with the later title Limbus Company (2023).
It is available on PC via Steam, PlayStation 4, Xbox consoles, and Nintendo Switch. Community data on sites such as HowLongToBeat aligns with the roughly 113-hour main story figure, with longer times reported for players who pursue additional content.
The recognition highlights the substantial narrative and content volume in Project Moon’s independent title, which has built a dedicated following since its release.