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Is Hearts of Iron IV multiplayer or co-op?

Yes — co-op. Hearts of Iron IV is a turn-based & grand strategy game released in 2016, 89% positive on Steam (342,150 reviews), with 32,112 playing right now. $49.99 on Steam.

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

Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation…

How Hearts of Iron IV 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: Strategy, World War II, Grand Strategy, War, Historical, Military, Alternate History, Multiplayer

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

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

Do you and a friend both own Hearts of Iron IV?Free, no login — uses public Steam profiles.

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Games like Hearts of Iron IV you can play together

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

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

Quick answers

Is Hearts of Iron IV co-op?
Yes, Hearts of Iron IV supports co-op.
Does Hearts of Iron IV have PvP?
Steam does not list PvP for Hearts of Iron IV.
Do we both need to own Hearts of Iron IV to play together?
Yes. Hearts of Iron IV 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 IV?
About 32,112 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