Named Game of the Year by over 50 publications, Valve's début title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
Cook The Headcrab Deathmatch Multiplayer Map NEW: mp_allowmonsters on for spawn Bullsquids and Pit Drones(OPFOR Only) Optimized for Half-Life Opposing Force for more weapons and monsters Hidden Secret Room
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the name is lol but awesome :) XD
deathmatch?
lol some have lols
lol