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Is Star Realms multiplayer or co-op?

Yes — online multiplayer. Star Realms is a cards & tabletop game released in 2016, 87% positive on Steam (2,069 reviews), with 57 playing right now. Free on Steam.

Online multiplayerSingle-player tooCards & tabletop · Cards & tabletop

Star Realms is a hugely popular space combat deckbuilding game. Download and play today (note: base set is required to play online) to find out why Star Realms…

How Star Realms 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
Remote Play Together (one copy, streamed to friends)
Yes
Cross-platform multiplayer (Windows / Mac / Linux)
Yes
Single-player mode
Yes

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: Deckbuilding, Strategy, Card Battler, Card Game, Board Game, Sci-fi, Turn-Based Strategy, Combat

Do you and a friend both own Star Realms?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Star Realms 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 Star Realms?Free, no login — uses public Steam profiles.

Or open the Steam store page.

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

Quick answers

Is Star Realms co-op?
Star Realms does not list co-op on Steam; it has Online multiplayer, Single-player too.
Does Star Realms have PvP?
Steam does not list PvP for Star Realms.
Do we both need to own Star Realms to play together?
Not always. Star Realms supports Steam Remote Play Together: one person who owns it hosts and streams a local session to friends who don't (Steam quotes up to four players, more on a fast connection). For online co-op or PvP, every player needs their own copy.
How many people play Star Realms?
About 57 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