The last remaining writer who worked on the Half-Life series, Chet Faliszek, has left Valve, GamesIndustry.biz reported.
Faliszek worked on Half-Life 2 Episodes 1 and 2, the Portal games, and Left4Dead games.
According to the report, Faliszek worked with Eric Wolpaw, with whom he ran the gaming site Old Man Murray, and author Mark Laidlaw.
Wolpaw and Laidlaw have already left the company.
Laidlaw, who wrote the stories of Half-Life 1 and 2, left Valve in 2016. Wolpaw departed in February.
Faliszek said there were no hard feelings.