Firewatch developer Campo Santo has joined Valve, where it will continue to work on its second game, In the Valley of Gods.
The terms of the deal were not disclosed, but a blog post published yesterday emphasised that Campo Santo will continue to operate as normal.
"From the day-to-day production of our last game, Firewatch, to the way we run the company, make merchandise, meet players at expos and shows, send out a quarterly literary journal, throw open-to-the-public game demos in the middle of an artificial forest-all of it is geared towards surprising, delighting, and entertaining the customers who have shared in our success," the company said.
"In Valve we found a group of folks who, to their core, feel the same way about the work that they do (this, you may be surprised to learn, doesn't happen every day). In us, they found a group with unique experience and valuable, diverse perspectives. It quickly became an obvious match."
The studio will now be based at Valve's office in Bellevue, Washington, where it will continue to work on its second game, In the Valley of Goods, as well as supporting Firewatch and producing its Quarterly Review.
The decision to join Valve is somewhat surprising, given that Campo Santo is both a relatively young studio and a very successful one. Firewatch, its debut game, launched in February 2016, and reached one million units sold by the end of the year.