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Half-Life
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silent protagonist
single player
playstation 2
microsoft windows
multiplayer
first of series
new mexico
half life franchise
play with wasd keys
alien
scientist
infestation
security guard
government
experiment
security
laboratory
machine gun
gun
shotgun
alien planet
marine
machine
alternate reality
fps
mysterious man
special forces
teleportation
blood
toxic waste
helicopter
desert eagle
destruction
commando
sniper rifle
tripmine
raid
multiple endings
military development
mishap
retina scan
accident
water
gore
robot
assault rifle
grenade launcher
conspiracy
man in black
government coverup
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