Turtle Rock Studios

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Turtle Rock Studios Turtle Rock Studios was founded in March 2002 by Michael Booth, is an independent game developer in the business of creating original entertainment titles and providing consulting services to the digital entertainment industry.
The studio worked in collaboration with Valve, producing titles such as Counter-Strike: Condition Zero, Counter-Strike (Xbox), as well as several maps for Counter-Strike: Source, and co-developing Left 4 Dead and Left 4 Dead 2 with Valve.


Turtle Rock Studios announced on March 16, 2006 they would be working with Valve on a "Source project", later to be named Left 4 Dead, which would be utilizing Valve's Source Engine and Steam. Press release.

On January 10th, 2008, Turtle Rock was acquired by Valve and renamed as Valve South. You can read the Press Release here.

Since March 2010, Turtle Rock Studios was split from Valve and later in 2021, TRS's parent company, Slamfire Inc., was acquired by Tencent. Since then, they have developed and released games such as Evolve, and Back 4 Blood (which is Left 4 Dead's spiritual successor), both new games received mixed reviews from fans, and between mixed to mostly positive reviews from critics.


Year Product Name Notes
2003 Counter-Strike (Xbox) Counter-Strike (Xbox) Co-developed with Ritual.
2004 Counter-Strike: Condition Zero Counter-Strike: Condition Zero
Counter-Strike: Source Counter-Strike: Source
2008 Left 4 Dead Left 4 Dead As Valve South
2009 Left 4 Dead 2 Left 4 Dead 2: The Passing
2010 Left 4 Dead: The Sacrifice
Left 4 Dead 2: The Sacrifice
As Turtle Rock Studios (split from Valve)
2011 Leap Sheep!
2015 Evolve
2016 Evolve Stage 2
Face Your Fears
2017 The Well
2019 Face Your Fears 2
Journey of the Gods
2021 Back 4 Blood Spiritual successor to Left 4 Dead and Left 4 Dead 2.

Counter-Strike: Source Counter-Strike: Source Maps

Year Map
2006 cs_militia
2005 de_nuke
2005 de_inferno
2005 de_train
2005 de_prodigy
2005 de_tides
2004 cs_office

Counter-Strike Bot

Turtle Rock Studios is responsible for the artificial intelligence behind CS_Bot, used in Counter-Strike: Condition Zero Counter-Strike: Condition Zero and Counter-Strike: Source Counter-Strike: Source. CS_Bot was later updated by Valve Valve for Counter-Strike: Global Offensive Counter-Strike: Global Offensive and Counter-Strike 2 Counter-Strike 2, and was used as the basis for NextBots in the Left 4 Dead series Left 4 Dead series, Team Fortress 2 Team Fortress 2, and Dota 2 Dota 2.

External links

See also