Is Galactic Civilizations III co-op?

Yes, Galactic Civilizations III supports co-op.

Does Galactic Civilizations III have PvP?

Yes, Galactic Civilizations III has player-versus-player modes.

Do we both need to own Galactic Civilizations III to play together?

Yes. Galactic Civilizations III 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 Galactic Civilizations III?

About 161 players were in-game when this page's data was last refreshed (2026-09-09).

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

Multiplayer games › Sandbox & building › Building & crafting

Is Galactic Civilizations III multiplayer or co-op?

Yes — co-op and PvP. Galactic Civilizations III is a building & crafting game released in 2015, 77% positive on Steam (10,282 reviews), with 161 playing right now. $9.89 on Steam.

Co-opPvPSingle-player tooSandbox & building · Building & crafting

Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for…

How Galactic Civilizations III plays with friends, according to Steam

Online co-op: Yes
Local / split-screen co-op: Not listed on Steam
Online PvP: Yes
LAN play: Not listed on Steam
Single-player mode: Yes
Mods: Steam Workshop

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: Aliens, Sci-fi, 4X, Turn-Based Strategy, Sandbox, 3D, Grand Strategy, Moddable

Do you and a friend both own Galactic Civilizations III?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Galactic Civilizations III 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 Galactic Civilizations III? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Galactic Civilizations III co-op?: Yes, Galactic Civilizations III supports co-op.
Does Galactic Civilizations III have PvP?: Yes, Galactic Civilizations III has player-versus-player modes.
Do we both need to own Galactic Civilizations III to play together?: Yes. Galactic Civilizations III 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 Galactic Civilizations III?: About 161 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