Not out of the box — but the JC3:MP mod makes it co-op and PvP. Just Cause™ 3 is a classic & campaign shooter game released in 2015, 84% positive on Steam (122,161 reviews), with 639 playing right now. $19.99 on Steam.
Free multiplayer with community servers; the campaign stays single-player. 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 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.
Compare our libraries Steam store pageTired 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; updated 2026-09-08. Powered by Steam — not affiliated with or endorsed by Valve Corporation.