Half-Life, Portal, Left 4 Dead Writer Leaves Valve

Valve veteran Erik Wolpaw has left the company. Following initial reports, Gamasutra confirmed that Wolpaw, whose writing credits include Half-Life 2: Episode One and Episode Two, as well as Portal and the two Left 4 Dead games, has exited the developer.

Wolpaw had worked at Valve since 2004. News of his departure originated today from another former Valve employee, Mark Laidlaw, who left Valve last year.

We don't know what Wolpaw is doing next, though Kotaku reports that he is on the writing team for Double Fine's Psychonauts 2.

In other news about Valve, founder Gabe Newell recently spoke with Gamasutra about the company's unusual--and highly successful--business structure.