Portal, Half-Life 2 co-writer Erik Wolpaw has left Valve

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Eric Wolpaw, the writer behind Portal, has left Valve as of today. Wolpaw's credits include Half-Life 2: Episodes 1 and 2, Portal and both Left 4 Dead games.

In 2015, Wolpaw confirmed that he was contributing to Double Fine Productions' Psychonauts 2, which is set for release in late 2018.

Additional video games he has written for include Counter-Strike: Global Offensive and a comic book adaptation for the Team Fortress series.

Along with no official announcement from Valve, there's now no statement from Wolpaw on why he left.

Writer Erik Wolpaw has left Valve Software after more than a decade at the company.

As you can see above, the Valve News Network tweet says that fellow writer Jay Pinkerton - who co-wrote Portal 2 with Wolpaw - also left the company. Wolpaw originally co-founded the site Old Man Murray with another Valve employee Chet Faliszek before eventually making his way to the development studio.

For those who do not know who Wolpaw is, Erik Wolpaw was part of Valve since 2004. Laidlaw was one of the scriptwriters for Half-Life and Half-Life 2.