Obsidian - the creator of Fallout: New Vegas, Star Wars: Knights of the Old Republic 2, South Park: The Stick of Truth and Pillars of Eternity (among many others) - was offered the opportunity to make a game based on George R. R. Martin's story in 2005 by Electronic Arts (well, EA Partners).
It was six years before Season One of Game of Thrones aired on TV, nevertheless Obsidian co-founder and CEO Feargus Urquhart was well aware of the Song of Ice and Fire books - he'd followed them since the series started in 1996. He knew intimately what he was turning down, and he believed he had a good reason why.
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http://www.eurogamer.net/articles/2...udio-turned-down-a-game-of-thrones-video-game