Valve

The Moving Pixels Podcast Has The Fireplace that Burns at 100 Billion Degrees

Does Silence Speak in the Loudest Voice?: Misconceptions about Silent Protagonists in Video Games

Portal 2: Cooperative Testing Initiative

Moving Pixels Podcast: Stepping Forward into ‘Portal 2’

“Her Name Is Caroline”: Identifying the Misbehaving Woman in ‘Portal 2’

‘Portal 2’ and the Politics of Stupidity

An Intimate Moment With the Computer

Audiosurf