Black Mesa
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About Black Mesa
Black Mesa is a fan-made reimagining of Valve Software’s Half-Life. You play as Gordon Freeman, a theoretical physicist at the Black Mesa Research Facility, where a routine experiment goes horribly wrong. To save the science team and the world, you fight an interdimensional alien invasion and a military clean-up crew.
The campaign
The single-player campaign spans 19 chapters, from top-secret labs and harsh desert landscapes to abandoned railways and other dimensions. It reimagines and refines the original campaign, with new and expanded Xen levels. You face classic enemies with updated features and AI, and wield military hardware, scientific prototypes and the iconic crowbar through detailed environments. The game also features updated graphics and effects, a new soundtrack and voice acting, and 50 achievements.
Multiplayer
You can fight other players across 10 maps from the Half-Life universe. The named maps include Bounce, Gasworks, Stalkyard, Undertow and Crossfire.
Create and share
The Black Mesa Source SDK lets you create mods, models and maps, then share them through the Steam Workshop.
Frequently asked questions
The best price for Black Mesa is $7.77 at Eneba. That is 61% less than on Steam, where it costs $19.99. 13 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and Black Mesa stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for Black Mesa are: Windows 10, 6 GB RAM, 20 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
Yes. Black Mesa has multiplayer and a single-player mode. It supports online PvP. Players on different platforms can play together.
Mostly, yes. Valve rates Black Mesa as Playable on the Steam Deck: it runs, but may need some manual setup.
Buy Black Mesa 61% cheaper than on Steam.
Black Mesa is available for 61% less in shops such as Eneba, YUPLAY, or Instant Gaming.
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.
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