The Hall of Doors
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The Hall of Doors was the way for players in the original version of Rayman 2 as well as in the PlayStation version to select what level they wanted to play. It was accessible to players after completing the first level, the Woods of Light, at the end of which the Grand Minimus shows Rayman the way to the Hall.
The Hall of Doors was constructed by the Teensies, who lead Rayman to it near the beginning of Rayman 2. The place where all paths eventually meet, the Hall of Doors is a dark wood, with a glass-like river stretching throughout it. The river contains Magic Spiral Doors leading to the levels of the game. Stars are seen both in the sky and in the distance below the river. When Rayman walks to a Magic Spiral Door, a hologram of something from that Door's level appears.
In the PlayStation version, the Hall of Doors looks a little different from that in the original version. It was replaced by the Isle of Doors in the Dreamcast version, and the Front in the PS2 remake, Rayman Revolution.