Operation: Black Mesa

A first-person shooter revisiting the Black Mesa Incident through two campaigns

Tripmine Studios · To be announced

Release: To be announced; not released yet
Wishlist rank: #223; most wanted
Followers: 28K; following the game
Demo: None

What we know: The developers posted three AMA updates between April and June 2026, following an earlier update and a developer blog about a laser puzzle.

What is Operation: Black Mesa?

This fan-made first-person shooter reimagines Half-Life: Opposing Force and Blue Shift in two single-player campaigns set during the Black Mesa Incident. You play as security guard Barney Calhoun and Corporal Adrian Shephard, surviving a disastrous shift and trying to escape the facility.

Screenshots and trailer

Operation: Black Mesa system requirements

Minimum: GeForce GTX 960, 4 GB RAM, 44 GB of disk space.

As published by the developer.

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Minimum

OS: Windows® 7 64 bit or Greater
Processor: 2.8 Dual Core Processor or Greater
Graphics: NVIDIA GeForce GTX 960 or Greater
Memory: 4 GB RAM
Storage: 44 GB available space
DirectX: Version 9.0c
Notes: System Requirements Subject to Change Before Release

Does Operation: Black Mesa have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Operation: Black Mesa run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Steam features: Workshop, Cloud saves, Family Sharing
Languages: Full audio: English.

Does Operation: Black Mesa use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam