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Is Just Cause 2: Multiplayer Mod multiplayer or co-op?

Yes — co-op. Just Cause 2: Multiplayer Mod is a classic & campaign shooter game released in 2013, 92% positive on Steam (14,804 reviews), with 7 playing right now. Free on Steam.

Online multiplayerSingle-player tooShooter · Classic & campaign shooter

JC2-MP is a project to bring multiplayer to Just Cause 2 in all of its magnificent glory. Imagine the chaos of normal Just Cause 2, then extending it out to…

How Just Cause 2: Multiplayer Mod plays with friends, according to Steam

Online co-op
Not listed on Steam
Local / split-screen co-op
Not listed on Steam
Online PvP
Not listed on Steam
LAN play
Not listed on Steam
Single-player mode
Yes
Controller
Partial 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: Open World, Multiplayer, Action, Third-Person Shooter, Adventure, Mod, Sandbox, Massively Multiplayer

Do you and a friend both own Just Cause 2: Multiplayer Mod?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Just Cause 2: Multiplayer Mod 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 Just Cause 2: Multiplayer Mod?Free, no login — uses public Steam profiles.

Or open the Steam store page.

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DOOM
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Tired of Just Cause 2: Multiplayer Mod? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Just Cause 2: Multiplayer Mod co-op?
Steam's store page doesn't flag a co-op category, but players tag Just Cause 2: Multiplayer Mod as co-op.
Does Just Cause 2: Multiplayer Mod have PvP?
Steam does not list PvP for Just Cause 2: Multiplayer Mod.
Do we both need to own Just Cause 2: Multiplayer Mod to play together?
Yes. Just Cause 2: Multiplayer Mod 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 Just Cause 2: Multiplayer Mod?
About 7 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