Planescape: Torment

Black Isle's 1999 RPG asked "What can change the nature of a man?" and spent 800,000 words trying to answer it. Chris Avellone's script is longer than War and Peace, and unlike most lengthy RPGs, every word earns its place. The Nameless One's journey through his forgotten lives is philosophy disguised as a dungeon crawler. Twenty-seven years later, no game has matched its literary ambition.