Is SUPREMACY: WORLD WAR 3 co-op?

Yes, SUPREMACY: WORLD WAR 3 supports co-op.

Does SUPREMACY: WORLD WAR 3 have PvP?

Yes, SUPREMACY: WORLD WAR 3 has player-versus-player modes.

Do we both need to own SUPREMACY: WORLD WAR 3 to play together?

Yes. SUPREMACY: WORLD WAR 3 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 SUPREMACY: WORLD WAR 3?

About 301 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 SUPREMACY: WORLD WAR 3 multiplayer or co-op?

Yes — co-op and PvP. SUPREMACY: WORLD WAR 3 is a turn-based & grand strategy game released in 2018, 77% positive on Steam (5,257 reviews), with 301 playing right now. Free on Steam.

Co-opPvPStrategy · Turn-based & grand strategy

This Long Term Strategy Game lets you take control of the armed forces of your nation. Become responsible for its military expansion, technological research…

How SUPREMACY: WORLD WAR 3 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
MMO: 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: Strategy, Free to Play, Wargame, Grand Strategy, Massively Multiplayer, Simulation, Indie, RTS

Do you and a friend both own SUPREMACY: WORLD WAR 3?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether SUPREMACY: WORLD WAR 3 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 SUPREMACY: WORLD WAR 3 you can play together

Hearts of Iron IV

Turn-based & grand strategy · 89% positive on Steam (342,150 reviews) · 32,112 playing right now

Sid Meier’s Civilization® VI

Turn-based & grand strategy · 87% positive on Steam (349,920 reviews) · 25,420 playing right now

Crusader Kings III

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

Stellaris

Turn-based & grand strategy · 86% positive on Steam (185,433 reviews) · 13,727 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

Tired of SUPREMACY: WORLD WAR 3? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is SUPREMACY: WORLD WAR 3 co-op?: Yes, SUPREMACY: WORLD WAR 3 supports co-op.
Does SUPREMACY: WORLD WAR 3 have PvP?: Yes, SUPREMACY: WORLD WAR 3 has player-versus-player modes.
Do we both need to own SUPREMACY: WORLD WAR 3 to play together?: Yes. SUPREMACY: WORLD WAR 3 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 SUPREMACY: WORLD WAR 3?: About 301 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