Is Subterror multiplayer or co-op?

Yes — co-op. Subterror is a co-op horror game released in 2025, 91% positive on Steam (377 reviews), with 8 playing right now. $7.99 on Steam.

Steam tags: Online Co-Op, Horror, Multiplayer, First-Person, Action, Underwater, Adventure, Submarine

Do you and a friend both own Subterror?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Subterror is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

Or open the Steam store page.

Games like Subterror you can play together

Tired of Subterror? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Subterror co-op?

Yes, Subterror supports co-op.

Does Subterror have PvP?

Steam does not list PvP for Subterror.

How many people play Subterror?

About 8 players were in-game when this page was built (2026-09-09).

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 2026-09-09. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. How the data works · Legal & privacy · All types · Game Pass