Single-player games like Black Mesa
Below are 17 single-player Steam games similar to Black Mesa, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Black Mesa page.
Ranked picks
- 1
Half-Life 2
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.
- 2
Half-Life: Alyx
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action and Adventure with Black Mesa.
Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Playing as Alyx Vance, you are humanity’s only chance for survival.
- 3
Call of Duty®: Black Ops 7
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
In Call of Duty®: Black Ops 7, Treyarch and Raven Software are bringing players the biggest Black Ops ever across an innovative Co-Op Campaign, an electrifying Multiplayer experience, and the legendary Round-Based Zombies mode.
- 4
Battlezone: Combat Commander
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.
- 5
Contagion
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action and Indie with Black Mesa.
Contagion isn't your average Zombie Shooter but instead takes a more realistic and different approach to the popular genre with unique characters, environments, weapons, items, and a built in system that makes every round completely unpredictable with resources, objectives, and paths ever changing.
- 6
Halo: The Master Chief Collection
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
The Master Chief’s iconic journey includes six games, built for PC and collected in a single integrated experience. Whether you’re a long-time fan or meeting Spartan 117 for the first time, The Master Chief Collection is the definitive Halo gaming experience.
- 7
Half-Life
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
- 8
Serious Sam HD: The Second Encounter
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action and Indie with Black Mesa.
Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!
- 9
SOMA
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action and Indie with Black Mesa.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 10
Fallout 4
Single-player alternative to Black Mesa — playable solo, no multiplayer required.
From Bethesda Game Studios, the award-winning creators of Starfield and The Elder Scrolls V: Skyrim, comes Fallout 4. A landmark in open-world RPG design and winner of over 200 ‘Best Of’ honors, including the DICE and BAFTA Game of the Year.
- 11
Dead Space
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action and Adventure with Black Mesa.
The sci-fi survival-horror classic returns, completely rebuilt to offer an even more immersive experience — including visual, audio, and gameplay improvements — while staying faithful to the original game’s thrilling vision.
- 12
System Shock® 2 (1999)
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
"Remember, it is my will that guided you here. It is my will that gave you your cybernetic implants, the only beauty in that meat you call a body. If you value that meat... you will do as I tell you." The cult classic sci-fi horror FPS-RPG has returned.
- 13
Alien: Isolation
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.
- 14
Serious Sam 3: BFE
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action and Indie with Black Mesa.
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
- 15
Half-Life: Source
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.
- 16
Quake
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.
- 17
Rogue Point
Single-player alternative to Black Mesa — playable solo, no multiplayer required. Shares Action with Black Mesa.
From the creators of Black Mesa: Welcome to Rogue Point! A 4-player co-op shooter where teamwork is everything. Join forces on intense missions with evolving objectives and powerful upgrades. Plan, Adapt, and Overcome. Your squad’s survival depends on it.