Half-Life: Opposing Force is an expansion pack for Valve Software's science fiction first-person shooter video game Half-Life. The game was developed by Gearbox Software and published by Sierra Entertainment on November 1, 1999. Opposing Force is the first expansion for Half-Life and was first announced in April 1999. Randy Pitchford, the lead designer on the game, later noted that he believed Gearbox was selected to develop Opposing Force because Valve wanted to concentrate on their future projects. Over the course of development, Gearbox brought in a variety of outside talent from other areas of the video games industry to help bolster various aspects of design. Opposing Force returns to the same setting as Half-Life, but instead portrays the events from the perspective of a U.S. Marine, one of the enemy characters in the original game. The player character, Adrian Shephard.

Members Watching  (0 - 50 of 145)
Avatar

Macedonia Agnesr

Online 18 minutes ago Joined Jun 12, 2015
Avatar

Hungary seniorcitizen

Online 31 minutes ago Joined Jan 22, 2013
Avatar

Czech Republic darkyuri

Online 44 minutes ago Joined Jun 10, 2014
Avatar

United Kingdom jrgl_cuchallain

Online 48 minutes ago Joined Apr 29, 2009
Avatar

Australia kyle00188

Online 1 hour ago Joined Nov 20, 2012
Avatar

United States Lenron_Kanteer

Online 2 hours ago Joined Aug 31, 2012
Avatar

Italy andrea89

Online 3 hours ago Joined Dec 17, 2012
Avatar

United States TheHappyCog

Online 3 hours ago Joined Jul 25, 2011
Avatar

Russian Federation Orzie

Online 4 hours ago Joined Jun 13, 2013
Avatar

Germany --JoKeR--

Online 4 hours ago Joined Feb 2, 2009
Avatar

Slovakia Marek33

Online 5 hours ago Joined Oct 26, 2013
Avatar

Ireland floor-pie

Online 5 hours ago Joined Dec 29, 2007
Avatar

Ireland SteveZombie

Online 6 hours ago Joined Jan 15, 2010
Avatar

Canada mod-man-8

Online 7 hours ago Joined Dec 30, 2007
Avatar

Germany FrEaKzZz

Online 8 hours ago Joined Feb 8, 2007
Avatar

Russian Federation Pasharet

Online 9 hours ago Joined Jul 5, 2012
Avatar

Bulgaria sappy_nirv_bg

Online 9 hours ago Joined May 25, 2007
Avatar

Russian Federation AHDPEU213

Online 9 hours ago Joined Jun 24, 2012
Avatar

United States Unq

Online 9 hours ago Joined Feb 4, 2010
Avatar

Germany 23-down

Online 12 hours ago Joined Sep 10, 2006
Avatar

United States Delta2

Online 12 hours ago Joined Sep 23, 2012
Avatar

Brazil CoRuJa

Online 12 hours ago Joined Dec 28, 2011
Avatar

United States ichaboddoc

Online 13 hours ago Joined Jul 5, 2013
Avatar

United States deadlife101

Online 14 hours ago Joined Apr 19, 2012
Avatar

Russian Federation flamingcrows

Online 14 hours ago Joined Jan 9, 2013
Avatar

France darknigthmare

Online 16 hours ago Joined Jan 28, 2009
Avatar

Bulgaria Nametaken

Online 17 hours ago Joined May 1, 2009
Avatar

Sweden Mirellanmal

Online 17 hours ago Joined Jan 27, 2010
Avatar

France Mateos

Online 20 hours ago Joined Nov 15, 2008
Avatar

Slovenia ShouldBeNew

Online 23 hours ago Joined May 2, 2013
Avatar

Russian Federation Karreh

Online 23 hours ago Joined Aug 22, 2009
Avatar

United States FoxMcGee

Online 1 day ago Joined Mar 8, 2011
Avatar

United States gta4life55

Online 1 day ago Joined Aug 16, 2009
Avatar

Canada DonutFUN

Online 1 day ago Joined May 27, 2010
Avatar

United States grabbie

Online 1 day ago Joined Aug 29, 2009
Avatar

Czech Republic Agent-K57

Online 1 day ago Joined Oct 13, 2011
Avatar

Slovakia Lubci50cal

Online 1 day ago Joined Aug 30, 2009
Avatar

Russian Federation Kys

Online 1 day ago Joined Feb 8, 2009
Avatar

United States Aublak

Online 1 day ago Joined Jan 20, 2014
Avatar

New Zealand Cyberdemon2006

Online 2 days ago Joined Jun 16, 2006
Avatar

Brazil bluluxabica

Online 2 days ago Joined Jul 26, 2007
Avatar

Germany ConfusedMaster

Online 2 days ago Joined Apr 29, 2007
Avatar

United States doctor_havock

Online 2 days ago Joined Dec 8, 2013
Avatar

Lithuania sCinix

Online 2 days ago Joined Jan 26, 2008
Avatar

France The_zxeno_prophet

Online 2 days ago Joined Aug 2, 2009
Avatar

Palestinian Territory cortex471

Online 2 days ago Joined Sep 5, 2012
Avatar

Canada zoner69

Online 3 days ago Joined Dec 28, 2012
Avatar

Mongolia KorteZZ

Online 3 days ago Joined Nov 19, 2007
Avatar

Ukraine Paincake|KRSK

Online 4 days ago Joined Jul 20, 2009
Avatar

Russian Federation cr00ke

Online 4 days ago Joined Dec 20, 2008
Icon
Half-Life: Opposing Force
Platform
Windows
Developer
Gearbox Software
Engine
GoldSource
Contact
Send Message
Release Date
Released Oct 1999
Game Watch
Track this game
Member Statistics
Members
145
Online
0
Views
718,779
Views Today
402
Last Online
Agnesr
Agnesr Online 18 minutes ago
seniorcitizen
seniorcitizen Online 31 minutes ago
darkyuri
darkyuri Online 44 minutes ago
jrgl_cuchallain
jrgl_cuchallain Online 48 minutes ago
kyle00188
kyle00188 Online 1 hour ago
Lenron_Kanteer
Lenron_Kanteer Online 2 hours ago
andrea89
andrea89 Online 3 hours ago
TheHappyCog
TheHappyCog Online 3 hours ago
Orzie
Orzie Online 4 hours ago
--JoKeR--
--JoKeR-- Online 4 hours ago
Marek33
Marek33 Online 5 hours ago
floor-pie
floor-pie Online 5 hours ago
SteveZombie
SteveZombie Online 6 hours ago
mod-man-8
mod-man-8 Online 7 hours ago
FrEaKzZz
FrEaKzZz Online 8 hours ago