Not out of the box — but the JC3:MP mod makes it co-op and PvP. Just Cause™ 3 is an open world adventure game released in 2015, 84% positive on Steam (122,161 reviews), with 639 playing right now. $19.99 on Steam.
Sandbox multiplayer with community servers. Development ended; it still runs with a patch, and a few servers remain. Steam lists Just Cause™ 3 as single-player, so it won't show up in Steam's own "games we both own" view as something you can play together — Ready Up counts it anyway, marked "Via mod", and you can hide mod-only games with one filter if that's not your thing.
With over 1000 km² of complete freedom from sky to seabed, Rico Rodriguez returns to unleash chaos in the most creative and explosive ways imaginable.
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, Action, Destruction, Third-Person Shooter, Multiplayer, Singleplayer, Shooter, Adventure
Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Just Cause™ 3 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 Just Cause™ 3? 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