Official sites
- Project Moon homepage
- Library of Ruina promo site (for PS4 and Switch release)
- Limbus Company promo site
- Project Moon twitter
- Limbus Company twitter
- HamHamPangPang twitter
- Project Moon youtube
- Project Moon former youtube (still has Lobotomy Corporation early videos)
- Project Moon postype
Artbooks
- Lobotomy Corporation artbook (you need to own the game)
- Library of Ruina artbook (you need to own the game)
Music
- Library of Ruina soundtrack
- Mili's Bandcamp (songs for Library of Ruina and Limbus Company)