Half-Life: Opposing Force
Computer Released November 19, 1999 Sierra Studios, Gearbox Software
- Region
- PAL
- Complete
- $56
- Sales in 90 days
- 1in 90 days
- Region
- NTSC
- Complete
- $12
- Sales in 90 days
- 4in 90 days
Variants
Market value
$99–$115
$99 and $115two sales
Liquidity 32 of 100
2 sold in 90 days
No trend yet
sales since Oct 2026
Low confidence
2 sales, newest Oct 14 · few sales
Sales history
| Sold | Listing | Region | Edition | Condition | Price | Feedback | |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026 sold in 6 days |
|
Half-Life: Opposing Force (PC, 1999) | NTSC | Big Box (Windows) | Complete | $99 eBay | |
| Oct 13, 2026 sold in 3 months |
|
Half-Life Opposing Force (PC CD-ROM, 1999) Original Big Box Complete w/ Manual | NTSC | Big Box (Windows) | Complete |
|
|
Photos
NTSC
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Front -
Disc
Frequently asked
How much is Half-Life: Opposing Force worth on Computer?
Two complete copies have sold in NTSC (US, Canada), for $99 and $115.
How quickly does Half-Life: Opposing Force sell?
Two copies sold in the last 90 days.
How is sales data gathered?
We retrieve listing information through eBay alerts and Vinted alerts provided by GrailHound and apply image recognition and text processing to link marketplace listings to games.
Who made Half-Life: Opposing Force and when did it come out?
Published by Sierra Studios and developed by Gearbox Software. Released November 19, 1999.