Is Hearts of Iron III co-op?

Yes, Hearts of Iron III supports co-op.

Does Hearts of Iron III have PvP?

Steam does not list PvP for Hearts of Iron III.

Do we both need to own Hearts of Iron III to play together?

Yes. Hearts of Iron 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 Hearts of Iron III?

About 49 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 Hearts of Iron III multiplayer or co-op?

Yes — co-op. Hearts of Iron III is a turn-based & grand strategy game released in 2009, 76% positive on Steam (5,961 reviews), with 49 playing right now. $9.99 on Steam.

Co-opSingle-player tooStrategy · Turn-based & grand strategy

Hearts of Iron III lets you play the most engaging conflict in world history, World War 2, on all fronts as any country and through multiple different…

How Hearts of Iron III 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
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: Grand Strategy, Strategy, World War II, Historical, Simulation, Military, Real-Time with Pause, War

Do you and a friend both own Hearts of Iron III?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Hearts of Iron 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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Stellaris

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Sid Meier's Civilization® V

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Europa Universalis IV

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

Quick answers

Is Hearts of Iron III co-op?: Yes, Hearts of Iron III supports co-op.
Does Hearts of Iron III have PvP?: Steam does not list PvP for Hearts of Iron III.
Do we both need to own Hearts of Iron III to play together?: Yes. Hearts of Iron 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 Hearts of Iron III?: About 49 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