Stellaris does not list co-op on Steam; it has Online multiplayer, Single-player too.

Does Stellaris have PvP?

Steam does not list PvP for Stellaris.

Do we both need to own Stellaris to play together?

Yes. Stellaris 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 Stellaris?

About 13,727 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 › Strategy › Turn-based & grand strategy

Is Stellaris multiplayer or co-op?

Yes — online multiplayer. Stellaris is a turn-based & grand strategy game released in 2016, 86% positive on Steam (185,433 reviews), with 13,727 playing right now. $49.99 on Steam.

Online multiplayerSingle-player tooStrategy · Turn-based & grand strategy

Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new…

How Stellaris 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
Cross-platform multiplayer (Windows / Mac / Linux): Yes
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: Space, Grand Strategy, Strategy, Sci-fi, 4X, Exploration, Sandbox, Simulation

Do you and a friend both own Stellaris?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Stellaris 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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Crusader Kings III

Turn-based & grand strategy · 90% positive on Steam (126,909 reviews) · 14,302 playing right now

Sid Meier's Civilization® V

Turn-based & grand strategy · 96% positive on Steam (204,265 reviews) · 12,206 playing right now

Europa Universalis IV

Turn-based & grand strategy · 87% positive on Steam (134,436 reviews) · 12,445 playing right now

9 Kings

Turn-based & grand strategy · 93% positive on Steam (5,252 reviews) · 6,920 playing right now

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

Quick answers

Is Stellaris co-op?: Stellaris does not list co-op on Steam; it has Online multiplayer, Single-player too.
Does Stellaris have PvP?: Steam does not list PvP for Stellaris.
Do we both need to own Stellaris to play together?: Yes. Stellaris 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 Stellaris?: About 13,727 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