Valve: Portal 2 is our last single player game

Online takes priority as Valve looks to follow what it believes are market trends

Portal 2 developer Valve has reportedly suggested that the game would be the developer's last single-player game.
The news comes by way of Valve behind-the-scenes chronicler Geoff Keighley who last week published an Apple iPad application called "The final hours of Portal 2".

In the application Keighley said "Portal 2 will probably be Valve’s last game with an isolated single-player experience," saying he heard this directly from Valve boss Gabe Newell.
http://www.mcvuk.com/news/44074/Valv...le-player-game