A little easier to get into than digging through how to write a videogame screenplay: http://www.nytimes.com/2010/05/23/movies/23persia.html
Tag: writing
Prince of Persia Original Game Screenplay
Not something you see every day: http://jordanmechner.com/blog/2011/01/pop-original-game-screenplay/ How to compose a story for a videogame.