World Terminus is an area in the End of the World that contains multiple portals leading to rooms from previous worlds of KH1. Progressing through the area either requires the Keyholes of each world mentioned to be sealed (AKA, the world to be completed) or for the portal's version to be completed, either of which creates a light bridge between areas. If not all worlds have been completed, at least one portal will be necessary to proceed.
Each room apart from 100 Acre Wood (which is a save point) contains an encounter with multiple Heartless, and all rooms contain a treasure chest with an item from the world where the room originates, usually the unique treasure obtained after a boss battle.
World: Traverse Town Room: Third District Item: Brave Warrior World: Wonderland Room: The Rabbit Hole Item: Ifrit's Horn World: Olympus Coliseum Room: Gates Item: Inferno Band World: Deep Jungle Room: Bamboo Thicket Item: White Fang World: Agrabah Room: Plaza Item: Ray of Light World: Atlantica Room: Calm Depths Item: AP Up World: Hallowe'en Town Room: Torture Chamber Item: Holy Circlet World: Neverland Room: The Galley Item: Raven's Claw World: 100 Acre Wood Room: Empty Meadow Item: Megalixir
The final room of the World Terminus is unique in that it does not actually appear before Sora finds it in the World Terminus. It is a corridor that leads to a side-room with a large machine hooked up to five containment pods. There are two encounters with multiple Invisibles - the first encounter triggers as soon as Sora enters the area, and Sora must read the console to activate the second, before he can leave. There is also another Megalixir.
The text on the console is as follows:
Ones born of the heart and darkness, devoid of hearts, ravage all worlds and bring desolation.
Seize all hearts and consummate the great heart. All hearts to be one, one heart to encompass all.
Realise the destiny: the realm of Kingdom Hearts. The great darkness sealed within the great heart.
Progeny of darkness, come back to the eternal darkness.
For the heart of light shall unseal the path.
Seven hearts, one Keyhole, one key to the door.
The door of darkness, tied by two keys.
The door of darkness to seal the light.
None shall pass but shadows, returning to the darkness.
Ones born of the heart and darkness, hunger for every heart until the dark door opens.It is never directly stated what this room is for, or who wrote the passage, but it is heavily implied that the room and the machine are part of Xehanort's laboratory, and that the passage is his research (since it directly explains his plans). The exact reason for the five containment pods has also never been given. This room has never appeared since, and neither has the machine, with all flashbacks relating to Xehanort's research using the observation deck from Hollow Bastion/Radiant Garden in KH2.