What is the best price for Half-Life: Opposing Force?

The best price for Half-Life: Opposing Force is $4.99 at Steam. It is the only shop with an offer that activates in your country.

What are the system requirements for Half-Life: Opposing Force?

The minimum requirements for Half-Life: Opposing Force are: Windows XP, 96 MB RAM. It also runs on macOS. The recommended specs are in the System requirements section.

Does Half-Life: Opposing Force have multiplayer or co-op?

Yes. Half-Life: Opposing Force has multiplayer and a single-player mode.

Is Half-Life: Opposing Force Steam Deck compatible?

Mostly, yes. Valve rates Half-Life: Opposing Force as Playable on the Steam Deck: it runs, but may need some manual setup.

Is Half-Life: Opposing Force the full game?

Yes. Half-Life: Opposing Force is the full base game. You need nothing else to play it.

Half-Life: Opposing Force

Name: Half-Life: Opposing Force
Brand: Valve
Rating: 95 (683 reviews)

Offers

Steam 2.0 · 560 reviews
$4.99View Offer

Screenshots

About Half-Life: Opposing Force

Half-Life: Opposing Force is a single-player action game set in the Black Mesa Research Facility. You play as a military specialist assigned to eliminate Gordon Freeman, face alien opponents and experiment with new weapons.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

Opposing Force returns to the same setting as Half-Life, but instead portrays the events from the perspective of a U.S. Marine, one of the enemy characters in the original game. The player character, Adrian Shephard, is sent in to neutralize the Black Mesa Research Facility after a scientific mishap causes it to be invaded by aliens, but quickly finds that the Marines are outnumbered and slowly being beaten back by a second alien race and black operations units.

Released: November 10, 1999
Developer: Gearbox Software
Publisher: Valve