Does Istrolid have PvP?

Yes, Istrolid has player-versus-player modes.

Do we both need to own Istrolid to play together?

Yes. Istrolid 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 Istrolid?

About 6 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 › Space sandbox

Is Istrolid multiplayer or co-op?

Yes — co-op and PvP. Istrolid is a space sandbox game released in 2016, 87% positive on Steam (2,662 reviews), with 6 playing right now. Free on Steam.

Co-opPvPSingle-player tooSandbox & building · Space sandbox

In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free…

How Istrolid 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
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: Free to Play, Building, Strategy, Space, Multiplayer, Indie, RTS, Sandbox

Do you and a friend both own Istrolid?

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

Or open the Steam store page.

Games like Istrolid you can play together

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Space sandbox · 95% positive on Steam (127,162 reviews) · 1,844 playing right now

NEBULOUS: Fleet Command

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Star Trek: Infinite

Space sandbox · 43% positive on Steam (3,328 reviews) · 31 playing right now

Heavenly Bodies

Space sandbox · 96% positive on Steam (3,928 reviews) · 19 playing right now

Star Sonata 2

Space sandbox · 67% positive on Steam (280 reviews) · 21 playing right now

Galactic Junk League

Space sandbox · 69% positive on Steam (1,744 reviews)

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

Quick answers

Is Istrolid co-op?: Yes, Istrolid supports co-op.
Does Istrolid have PvP?: Yes, Istrolid has player-versus-player modes.
Do we both need to own Istrolid to play together?: Yes. Istrolid 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 Istrolid?: About 6 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