Publication Information
- HomeWorld : World of Decade
- Japanese : ディケイドの世界
- Version Of Reality : A.R.World
- Season : Kamen Rider Decade
- Main View : Full Episod
World of Decade is the version of reality that is the true home of Tsukasa Kadoya (Kamen Rider Decade). It is the primary setting of Kamen Rider Decade : All Riders vs. Dai-Shocker. The backdrop used to enter this world depicts an old mansion that is the home of the Kadoya family. This A.R. World is neither one of the Nine Worlds nor the New Worlds. This is the world where Daiki Kaito got his first treasure, the Diendriver.
Inhabitants: Dai-Shocker Members In The World Of Decade
- Shiomaneking
- Ganikomoru
- Destron Combatmen
- Doras
- Garai
- Zu-Mebio-Da
- Me-Bajisu-Ba
- Me-Ginoga-De
- Go-Gadoru-Ba
- Leiurus Acutia
- Formica Pedes
- Formica Regia
- Taurus Ballista
- Butterfly Orphnoch
- Giraffe Orphnoch
- Longhorn Orphnoch
- Slug Orphnoch
- Wild Boar Orphnoch
- Pelican Orphnoch
- Stinkbug Orphnoch
- Arch Orphnoch
- Elephant Undead
- Giraffa Undead
- Darkroach
- Kappa
- Bakeneko
- Hitotsumi
- Coleoptera Worm Aeneus
- Coleoptera Worm Croceus
- Coleoptera Worm Argentum
- Geophilid Worm
- Subst Worm
- Cassis Worm Gladius
- Albinoleo Imagin
- Mole Imagin (Axe Hand)
- Mole Imagin (Drill Hand)
- Mole Imagin (Cross Hand)
- Rat Fangire
- Sungazer Fangire
- Bat Fangire
