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First fully 3-dimensional RPG

First fully 3-dimensional RPG
Who
Ultima Underworld: The Sygian Abyss
What
First
When
March 1992
The first RPG to make use of a fully three-dimensional environment was Ultima Underworld, released in March 1992 and developed by Looking Glass Technologies with acclaimed designer Warren Spector, who also produced Deus Ex. Featured in Guinness World Records Gamer''s Edition 2010