pocket dimensions

>Arifureta Shokugyou;  Absolute Territory (customisable world-sized pocket dimension)
>Cradle; Pocket World
>DC Occult; Dimension Lord (Perk)
>Exalted: The Infernals; The Inner World (Perk)
>Generic Creepypasta; Pocket Realm (Perk)
>Generator Rex; Portal Creation (Power)
>Labyrinth; (The Labyrinth itself under the Royal branch)
>Labyrinth; (another under drop in that makes a realm out of your bedroom)
>Mage: The Awakening; Arcanum: Space (Power)
>Marvel Magic; Hell Lord (Perk)
>Minecraft; MystCraft (make them to order)
>Sailor Moon; Subspace Dimension (Perk)
>Type-Moon (Tsukihime, FATE, Fate Stay Night); Reality Marble (Item)
>Traveler's Gate; A Territory to call Home (Perk)
>Terraria; Frequent flyer Miles (three instances)

Cultivation Chat Group
Exalted Infernals
Genius: the Transgression
Planescape
The Magicians
World Seed