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Is Warhammer 40,000: Inquisitor - Martyr multiplayer or co-op?

Yes — co-op and PvP. Warhammer 40,000: Inquisitor - Martyr is an action rpg & dungeon crawler game released in 2018, 76% positive on Steam (21,150 reviews), with 208 playing right now. $49.99 on Steam.

Co-opPvPSingle-player tooRPG · Action RPG & dungeon crawler

Enter the Chaos-infested Caligari Sector and purge the unclean with the most powerful agents of the Imperium of Man! W40k: Inquisitor – Martyr is a grim…

How Warhammer 40,000: Inquisitor - Martyr plays with friends, according to Steam

Online co-op
Yes
Local / split-screen co-op
Not listed on Steam
Online PvP
Yes
LAN play
Not listed on Steam
Single-player mode
Yes
Controller
Full controller support

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: Warhammer 40K, Action RPG, RPG, Hack and Slash, Action, Loot, Dark, Co-op

Do you and a friend both own Warhammer 40,000: Inquisitor - Martyr?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Warhammer 40,000: Inquisitor - Martyr is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

Do you and a friend both own Warhammer 40,000: Inquisitor - Martyr?Free, no login — uses public Steam profiles.

Or open the Steam store page.

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Tired of Warhammer 40,000: Inquisitor - Martyr? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Warhammer 40,000: Inquisitor - Martyr co-op?
Yes, Warhammer 40,000: Inquisitor - Martyr supports co-op.
Does Warhammer 40,000: Inquisitor - Martyr have PvP?
Yes, Warhammer 40,000: Inquisitor - Martyr has player-versus-player modes.
Do we both need to own Warhammer 40,000: Inquisitor - Martyr to play together?
Yes. Warhammer 40,000: Inquisitor - Martyr is played online, so each player needs their own copy on their own Steam account (or PC Game Pass where it is offered). Steam Families can share a library, but two people cannot play the same shared game at the same time.
How many people play Warhammer 40,000: Inquisitor - Martyr?
About 208 players were in-game when this page's data was last refreshed (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 2026-09-23. 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