Old Man Murray travaille sur Left 4 Dead et Portal

« Among Valve’s contributions to Left 4 Dead is its writing, which is being handled by Chet Faliszek and Psychonauts co-writer Erik Wolpaw, the pair behind the venerable Old Man Murray. » – Lu chez Shacknews. Les gars d’Old Man Murry on aussi travaillé sur les dialogues de Portal.