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OP4
OP4 stands for
Opposing Force
, the first and most popular
expansion pack
for
Half-Life
.
EdrianShepperdBoi - Wen is OP42
comeing
out? Coz I kno
thet
the
gman
kept Shepperd coz he riminded him of him lol.
by
UniversalPLague
March 30, 2005
Flag
Get the
OP4
mug.
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