Yes — PvP. Black Mesa is a sci-fi shooter game released in 2020, 95% positive on Steam (127,693 reviews), with 907 playing right now. $19.99 on Steam.
Plays the single-player campaign co-operatively on a Black Mesa server; the game only ships deathmatch on its own. The game is multiplayer on its own; this is the community layer people use on top of it.
Relive Half-Life.
Steam's own category list for the game, as of 2026-09-09. "Not listed" means the store page does not claim that mode; community mods or Remote Play can still add it.
Steam tags: FPS, Remake, Action, Sci-fi, First-Person, Singleplayer, Shooter, Atmospheric
Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Black Mesa is one of them — then helps you pick tonight's game with a weighted roll or a bracket.
Or open the Steam store page.
Tired of Black Mesa? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.
Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; page updated 2026-09-23. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. Ready Up is a Somebody Decide program. How the data works · Legal & privacy · All types · Game Pass