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Is Supremacy: Call of War 1942 multiplayer or co-op?

Yes — co-op and PvP. Supremacy: Call of War 1942 is a turn-based & grand strategy game released in 2017, 71% positive on Steam (5,832 reviews), with 281 playing right now. Free on Steam.

Co-opPvPStrategy · Turn-based & grand strategy

Take over the control of one of the mighty nations during the times of World War 2 in this persisting long-term strategy game. Conquer provinces, forge…

How Supremacy: Call of War 1942 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, World War II, War, Grand Strategy, Military, Simulation, Multiplayer

Do you and a friend both own Supremacy: Call of War 1942?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Supremacy: Call of War 1942 is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

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Stellaris
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Sid Meier's Civilization® V
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Europa Universalis IV
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Tired of Supremacy: Call of War 1942? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Supremacy: Call of War 1942 co-op?
Yes, Supremacy: Call of War 1942 supports co-op.
Does Supremacy: Call of War 1942 have PvP?
Yes, Supremacy: Call of War 1942 has player-versus-player modes.
Do we both need to own Supremacy: Call of War 1942 to play together?
Yes. Supremacy: Call of War 1942 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: Call of War 1942?
About 281 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