Half-Life: Opposing Force
Developed by Gearbox Software · Published by Valve
At a glance
Overview
An action game by Gearbox Software, published by Valve — single-player, multi-player.
Steam’s own one-line description: “Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.” — developer/publisher text via the Steam store page.
Features & modes
Derived from the gameplay modes and feature categories Steam lists for Half-Life: Opposing Force.
| Feature | Supported |
|---|---|
| Single-player | Yes |
| Multiplayer | Yes |
| Co-op | No |
| Online co-op | No |
| PvP | No |
| Cross-platform multiplayer | No |
| Full controller support | No |
| Partial controller support | No |
| Steam Cloud saves | No |
| Steam Achievements | No |
System requirements (PC)
As published on the Steam store page. Requirements can change between updates.
Minimum
- 500 mhz processor, 96mb ram, 16mb video card, Windows XP, Mouse, Keyboard, Internet Connection
- 800 mhz processor, 128mb ram, 32mb+ video card, Windows XP, Mouse, Keyboard, Internet Connection
Supported languages (4)
Half-Life: Opposing Force FAQ
Answered from the official Steam listing as of June 2026. Where something hasn't been announced, we say so rather than guess.
What kind of game is Half-Life: Opposing Force?
Steam classifies Half-Life: Opposing Force as a Action game, developed by Gearbox Software. Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.
How much does Half-Life: Opposing Force cost?
As of June 2026, Steam lists Half-Life: Opposing Force at $0.99. Prices and regional pricing change — check the Steam page for the current figure.
Is Half-Life: Opposing Force single-player or multiplayer?
Steam lists these modes for Half-Life: Opposing Force: Single-player, Multi-player. It lists a single-player mode.
Is Half-Life: Opposing Force on PlayStation, Xbox, or Switch?
Our data comes from the Steam (PC) store, which lists Half-Life: Opposing Force for Windows, macOS, Linux. Console availability isn’t in our Steam-sourced data — check the official site or the console store.
Is Half-Life: Opposing Force out yet?
Yes — Steam lists a release date of Nov 1, 1999.
What platforms is Half-Life: Opposing Force on?
Half-Life: Opposing Force is listed for Windows, macOS, Linux on the Steam (PC) store. Console availability isn't covered by Steam's PC store data — check the official channels.
Is Half-Life: Opposing Force single-player or multiplayer?
Steam lists these modes: Single-player, Multi-player.
How much does Half-Life: Opposing Force cost?
Steam lists it at $0.99.
Who made Half-Life: Opposing Force?
Half-Life: Opposing Force is developed by Gearbox Software and published by Valve.
Where to get Half-Life: Opposing Force
We don't sell games or track prices — this links to the official Steam store page.
View on Steam →Listing details from Valve's public Steam store data. Not affiliated with Valve/Steam, Valve.