News Portal, Half-Life 2 co-writer Erik Wolpaw has left Valve Feb. 18, 2017 Stephany Nunneley-Jackson
News Minecraft, Day Z represent the "promise" of games, say Schafer, Wolpaw Sept. 4, 2012 Brenna Hillier
News Valve writer talks about why Chell doesn't speak in Portal or Portal 2 May 7, 2011 Stephany Nunneley-Jackson
News J.K. Simmons lends voice to Portal 2's Aperture Science president and founder Cave Johnson March 12, 2011 Stephany Nunneley-Jackson
News Valve plans to let us in on more of the Portal 2 story soon, says Wolpaw March 11, 2011 Stephany Nunneley-Jackson
