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A playable Left 4 Dead prototype is now online

Someone's split the zombeans.

An early - and playable - prototype for Left 4 Dead has reportedly leaked online.

Described by the mod developer as "a historical dev map seen for the first time outside of Valve's office", the "Zombie City" mod for Counter-Strike: Source by WolfCl0ck was quietly uploaded to Gamebanana on Friday as part of a larger leak of Counter-Strike maps.

Valve's Terror-Strike map just leaked.

"Zombie_City is a map created by Valve (or possibly Turtle Rock Studios) that was a part of the map sources folder that released today," the mod description page teases (thanks, GamesRadar+). "It is likely the starting point of Left 4 Dead, and for those of you who have heard the name 'Terror-Strike' before, you will love to get the chance to play this prototype level.

"My upload fixes a texture by adding a new material for it. I have also created an overview texture, generated a nav mesh, and added a level description, all of which are conveniently packed into the bsp itself for maximum convenience. Try it out and let me know how you think!"

It's unknown at this point who has distributed the mod or why, but it's thought the mod originates from an early build - called Terror Strike - by Turtle Rock Studios.

ICYMI, Left 4 Dead almost didn't have zombies. Former Valve writer Chet Faliszek revealed that during the development of Left 4 Dead, he had to convince Valve president Gabe Newell that zombies weren't cliché or "cheesy".

Did you see this new mod that brings 6DoF, motion-controlled VR to Left 4 Dead 2?

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Vikki Blake avatar

Vikki Blake


When​ ​her friends​ ​were falling in love with soap stars, Vikki was falling in love with​ ​video games. She's a survival horror survivalist​ ​with a penchant for​ ​Yorkshire Tea, men dressed up as doctors and sweary words. She struggles to juggle a fair-to-middling Destiny/Halo addiction​ ​and her kill/death ratio is terrible.

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