"Zombie Lab Demo" It is a way with "Zombies" in which the player must destroy all "Zombies". "Mods" It is a demo version download the "Source SDK 2006" if a fault occurs install the "Source SDK 2007" if there is an error and I put a credit.
Its the wrong gameinfo.txt Mod dident start.
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Its the wrong gameinfo.txt
Mod dident start.