GAMESAY

Half-Life: Opposing Force

Released
Developer
Gearbox Software
Publisher
Sierra Entertainment, Valve
Release
10 Nov 1999
Gamesay Conversation Index Rank
#3,187
Storefronts
Steam

Conversation Volume Per Day

Recorded events

3 recorded events
30 Mar 2013Steam store page live
17 Mar 2011Announce
10 Nov 1999Launch
Not collected yet
Marketing spend, review embargo dates and console pre-order openings are not recorded. This space stays empty until they are.
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