After working on Counter-Strike: Condition Zero under contract for Valve, Turtle Rock Studios had a couple of ideas in the works. One was a first-person wizard game that never got off the ground, whil
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After working on Counter-Strike: Condition Zero under contract for Valve, Turtle Rock Studios had a couple of ideas in the works. One was a first-person wizard game that never got off the ground, while the other was a mod for Counter-Strike that transformed the counter-terrorists into bots who came at you in swarms and only attacked with knives. This was Terror-Strike, and it was the foundation of Left 4 Dead.
As Turtle Rock founder Michael Booth explains in the Left 4 Dead commentary, « While we were developing bots for Counter-Strike: Source we discovered that a few of us armed to the teeth with automatic weaponry against 30 knife-wielding enemy bots was a lot of fun.
