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
- $10
- Sales in 90 days
- 3in 90 days
Variants
Market value
3 sold in 90 days · sells in about 7 weeks · 4 listed now
sales since Oct 2026
3 sales, newest Oct 17 · few sales
Sales history
| Sold | Listing | Region | Edition | Condition | Price | Feedback | |
|---|---|---|---|---|---|---|---|
| Oct 17, 2026 sold in 7 weeks |
|
Half-Life: Opposing Force (PC, 1999) Disc is in Great Condition! - Valve Game | NTSC | Jewel Case (Windows) | Complete | $9.99 eBay · Offer accepted asking price shown | |
| Oct 16, 2026 sold in 4 weeks |
|
Half-Life Opposing Force PC Game | NTSC | Jewel Case (Windows) | Complete |
|
|
| 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 |
|
|
| Oct 10, 2026 sold after a year |
|
Half Life Opposing Force for PC - Not Tested | NTSC | Jewel Case (Windows) | Complete | $9.99 eBay | |
Photos
NTSC
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Front -
Disc
Frequently asked
How much is Half-Life: Opposing Force worth on Computer?
A complete copy sells for about $10 in NTSC (US, Canada). The three sales in the last 90 days went for $8 to $14.
How quickly does Half-Life: Opposing Force sell?
Three copies sold in the last 90 days. The cheapest listings take about 7 weeks to sell, and four are listed right now.
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.