Is Project Castaway co-op?

Yes, Project Castaway supports co-op.

Does Project Castaway have PvP?

Steam does not list PvP for Project Castaway.

How many people play Project Castaway?

About 57 players were in-game when this page was built (2026-09-09).

Ready Up — what game do we play?Compare two Steam libraries →

Multiplayer games › Survival › Survival craft

Is Project Castaway multiplayer or co-op?

Yes — co-op. Project Castaway is a survival craft game released in 2026, 69% positive on Steam (1,208 reviews), with 57 playing right now. $5.99 on Steam.

Co-opSingle-player tooSurvival · Survival craft

Project Castaway is a survival crafting title set in the Pacific Ocean. Live the life of a stranded castaway, with only yourself - and the island's inhabitants…

Steam tags: RPG, Exploration, Open World Survival Craft, Survival, Sandbox, First-Person, Open World, Underwater

Do you and a friend both own Project Castaway?

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

Or open the Steam store page.

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

Quick answers

Is Project Castaway co-op?: Yes, Project Castaway supports co-op.
Does Project Castaway have PvP?: Steam does not list PvP for Project Castaway.
How many people play Project Castaway?: About 57 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