Library of Ruina sales900K copies
Project Moon · released August 10, 2021
PlayStationPCXbox
"May you find your book in this place." Combat between the guests and the librarians breaks out as if it were on a stage. Defeated guests turn into books, and the Library grows onward. And eventually, get your hands on… The one singular, perfect book.
Sales
900,000
all platforms · as of October 19, 2026
Latest Steam CCU
2,895
Steam daily peak · Oct 25, 2026
Steam all-time peak
5,012
Steam concurrent players · Nov 2024
$29.99all-time low: $10.19