Overview
Half-Life: Opposing Force comes from Gearbox Software and is published by Valve. It arrived on Steam on Nov 1, 1999, and it sits naturally among Single-player, Multi-player, Custom Volume Controls, Adjustable Difficulty, Playable without Timed Input, Save Anytime, Valve Anti-Cheat enabled, and Family Sharing. SteamPulse tracks it across Windows, macOS, Linux, and Steam so readers get a quick useful snapshot, not just a wall of numbers.
Players and reviews
Half-Life: Opposing Force's latest SteamPulse observation recorded 81 players at 13 September 2026 - 03:47:31 UTC, with a tracked peak near 5,373. This peak is the highest value in the available SteamPulse record and may not include activity before tracking began. Player reaction is 95% positive across 28,645 reviews.
Language and system requirements
Half-Life: Opposing Force is available in 4 languages including:
3 regional rating boards including dejus, steam germany, and igrs
| Platform | Type | OS | Processor | Memory | Graphics | Storage |
|---|---|---|---|---|---|---|
| Windows | Minimum | Not listed | Not listed | Not listed | Not listed | Not listed |
| macOS | Minimum | Not listed | Not listed | Not listed | Not listed | Not listed |
| Linux | Minimum | Not listed | Not listed | Not listed | Not listed | Not listed |
Sales, recommendations, and streams
Half-Life: Opposing Force has sold up to 1,400,000 units and has 25,391 Steam recommendations. The estimated VGI revenue is $4,700,000. On Twitch, 0 streamers are live with around 0 total watchers.