Former Valve studio Turtle Rock has reformed and appears to be working on new projects, according to updates on its website and Facebook.

Describing themselves as "developers who worked with Valve Software to help create Counter-Strike: Condition Zero and Left 4 Dead", the group is currently hiring for animation and art roles.

Turtle Rock was formed in 2002 by Michael Booth, and spent some years collaborating with the likes of Valve until the Half-Life developer acquired it outright in 2008, thanks in part to its ongoing work on Left 4 Dead.

However, Valve eventually asked employees at the studio to move up to its main office just outside Seattle, leading to the effective closure of the studio.

The Turtle Rock website doesn't offer any new insight into these events, or explain the circumstances of the company's resurrection, but does have some nice rootin' tootin' visuals and links to a recently released "side project", an iPhone application called Garage Buddy.