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Left 4 Dead prototype accidentally added to Counter-Strike update

And now we get to play it!

An early Left 4 Dead prototype was accidentally bundled in Counter-Strike‘s 1.6 update and has since been extracted for continued play.

The prototype, part of Counter-Strike‘s 22 November update, has since been pulled from within the update package, but you know how the internet works. The files are now being distributed independently, and people are jumping at the chance to check it out.

The prototype is named Terror Strike and, according to content creator Gabe Follower, was “accidentally compiled” and added to the Counter-Strike 1.6 update.

“Yes, this is older than zombie_city and the leaked L4D footage that was re-discovered a few weeks ago, both of which were based on Counter-Strike: Source,” added YouTube’s ilovethevopo. “Zombie_city was originally built for CZ and ported to CSS, but we never got any actual content from the CZ era of L4D until now.

“The code was removed, but not before fans snagged 1.6’s dll files and worked some magic to make a quick ‘mod’ built on Condition Zero,” ilovethevopo continued. “The Terror Strike code was included because 1.6 has code from CZ in it, and it seems someone forgot to strip the Terror Strike code from the dlls before originally shipping the update.” 

You can check the prototype out for yourself in the ilovethevopo’s video, below. The video also has a link to download the files to try for yourself.

Left 4 Dead was released back in 2008 on Windows PC and Xbox 360.


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Steve Wright

Steve's the owner of this very site and an active games journalist nearing twenty (TWENTY!?!) years. He's a Canadian-Australian gay gaming geek, ice hockey player and fan. Husband to Matt and cat dad to Wally and Quinn.