The World Terminus is a location in Kingdom Hearts.
Settings and Areas
Found deep within the End of the World, the World Terminus is a series of pillar-like structures spread over what appears to be a vast empty space. Each pillar contains a green swirl of light which connects to the previous pillar, a blue swirl of light which connects to the next pillar, and a terminal to one the worlds whose Keyholes Sora can potentially lock, in the form of a beam of roiling darkness. If Sora has locked the respective world's Keyhole, its terminal is violet and the blue swirl of light is present, but if he hasn't, the terminal is blue and the blue swirl of light will not appear until the terminal is completed.
Each terminal takes Sora and his party to a location from its respective world, and each of these contain Heartless native to that world and have all but one exit blocked off. In order, Sora is taken to the Third District at Traverse Town, the Rabbit Hole at Wonderland, the Coliseum Gates at Olympus Coliseum Gates, the Bamboo Thicket at Deep Jungle, the Plaza in Agrabah, the Calm Depths at Atlantica, the Torture Chamber at Halloween Town, and the Galley at Neverland. Upon completing each terminal, Sora receives a treasure that symbolizes that world; in the original Kingdom Hearts, these are copies of the accessories he received from each world's respective boss, while in Kingdom Hearts Final Mix they are synthesis materials and other items. These terminals remain accessible after completion. As in the original Atlantica and Halloween Town, Sora is transformed into his merman and vampire forms within the appropriate terminals. However, the Olympus Coliseum terminal has the dusky lighting of the Hades Cup, and the Neverland terminal does not allow Sora free flight.
However, the final two terminals are outliers. The green terminal for 100 Acre Wood, which is composed of sparkling light, leads to the Meadow and contains a save point and a Megalixir, instead of enemies and an accessory. When Sora uses this terminal, he dissolves into starlight rather than the dark mist of the other terminals.
Meanwhile, the red terminal for Hollow Bastion, which is composed of roaring flames, leads to the Laboratory (研究室, Kenkyūshitsu?), an area which Sora had not previously visited and does not contain treasure. This lab consists of a short hallway blocked by a large Heartless emblem at one end, with a small room to the side that opens after Sora defeats several Heartless. The side-room contains a large machine with a computer console and five capsules on it hooked up to a tank of unknown liquid. Red, orange, and black warps in space dot the hall and lab. The computer has a data log for Sora to read:
After reading the message, Sora is once again attacked by Heartless. Once Sora completes the terminal, it vanishes and is replaced by a hole leading to the Evil Grounds, rendering the Laboratory inaccessible.