In June 2026, Library of Ruina entered the Guinness World Records as the video game with the longest story campaign, averaging 113 hours of playtime for the main storyline. The new record surpasses the previous holder, Persona 5 Royal by Atlus, by roughly twelve hours, counting only the time required to complete the core narrative.

Released in 2021 by Project Moon, the title blends turn‑based combat with deck‑building mechanics. Players run a library where visitors are summoned to duels; victorious opponents are transformed into books that expand the collection. The game directly follows Lobotomy Corporation (2018) and further expands the universe with the 2023 release Limbus Company.

Securing the record highlights the game's depth and endurance, drawing both newcomers and veterans alike. The surge in attention to its extensive gameplay is likely to spur the developers toward new installments and innovative features within the series.