- Achievements
- Advent
- Advent Guard
- Aegolius
- Alphonse
- Ancient Owls
- Anne
- Anti-Hex
- Asio
- Asio/Talks
- Barb
- Battle of Advent
- Boguin
- Bomboman
- Bonacci
- Bonanza
- Bonfire
- Book of Noctae
- Buccanary
- Buccanary Coins
- Dirk
- Eternal Sanctuary
- Fib
- Floating Continent
- Floating Tower
- Fuses
- Gawk
- Geddy
- Gnomes
- Golden Disks
- Gunner
- Hex Machine
- Kaboon
- Kernelle
- Key
- Landmarks & Civilizations
- Legendary Adventure Emporium
- Levigate
- Mandolyn
- Meat-Eating Gnats
- Molstrom
- Molt
- Noctae
- Otus
- Owl Cloak
- Owl Relics
- Owl Temple
- Owl Temple Guardian
- Owlboy
- Owlboy Wiki
- Shell
- Slumps
- Solus
- Spikeballs
- Steambombs
- Strato
- Strix
- Surnia
- Teleporter Device
- The Loop
- The Pirates
- The Professor
- Toby
- Torque
- Trinkets
- Tropos
- Twig
- Unused Sprites
- Vellie
- Vellie Cave
- Vellie Guard
- Vent Snake
- Wards
- Wilk