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About
Hearts of Iron IV: Arms Against Tyranny Four Northern democracies are seemingly helpless against nearby predatory dictatorships. Despite their size, Finland, Norway, Denmark, and Sweden have a chance to avoid conquest through clever diplomacy or fierce resistance.
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Based on
1928 reviews
- Country Compatibility:
- Languages:
- Developer:
- Paradox Development Studio
- Publisher:
- Paradox Interactive
- Release date:
- 10 October 2023
- Genre:
- Recent Steam reviews:
- Not specified
- All Steam reviews:
- Mixed (1928)
Media
00:00
Game features
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Description
Hearts of Iron IV: Arms Against Tyranny
Four Northern democracies are seemingly helpless against nearby predatory dictatorships. Despite their size, Finland, Norway, Denmark, and Sweden have a chance to avoid conquest through clever diplomacy or fierce resistance. Write a new history of the Nordic countries in Arms Against Tyranny, a new expansion for Hearts of Iron IV.
This expansion to Paradox Interactive’s celebrated grand strategy wargame about the tumult of the years around the Second World War adds new focus trees and alternate histories for the northernmost nations of Europe, customization of weapons manufacturers, and new ways to take advantage of neutrality to profit your own citizens.
Recommended system requirements
minimum*
- OS *:
- Windows® 7 64 Bit | Windows® 8.1 64 Bit | Windows® 10 Home 64 Bit
- Processor:
- Intel® Core™ i5 750 | AMD® FX 4300
- Memory:
- 4 GB RAM
- Graphics:
- Nvidia® GeForce™ GTX 470 (1.28GB) | AMD® HD 5850 (1GB) | Intel Iris Xe G7 (Tiger Lake) | AMD® Radeon™ RX Vega 11 | Steam Deck
- DirectX:
- Version 9.0c
- Storage:
- 2 GB available space
- Sound Card:
- Direct X- compatible soundcard.
- Additional Notes:
- Mouse and keyboard are required. / Latest available WHQL drivers from both manufacturers/ Internet Connection or LAN for multiplayer, Up to 32 other players in multiplayer mode.
recommended*
- OS:
- Windows® 10 Home 64 bit
- Processor:
- Intel® Core™ i5 2500K | AMD® Ryzen 3 2200G
- Memory:
- 6 GB RAM
- Graphics:
- Nvidia® GeForce™ GTX 570 (1.28GB) | AMD® Radeon™ HD 7970 (3GB) | Intel Iris Xe G7 (Tiger Lake)
- DirectX:
- Version 9.0c
- Storage:
- 2 GB available space
- Sound Card:
- Direct X- compatible soundcard.
- Additional Notes:
- Mouse and keyboard are required. / Latest available WHQL drivers from both manufacturers. / Internet Connection or LAN for multiplayer, Up to 32 other players in multiplayer mode.
User reviews
Moscow
Recommended | 03 Mar 2026
Easily best DLC for the game. Finland, Sweden, Norway and Denmark becomes so playable and amazing. Making the North Europe feel alive. Also International Market comes with this DLC, and this is something that makes this
Helpful: 18
Mabus (the Werewolf)
Not recommended | 24 Dec 2025
This DLC is broken still in 2025, functions terribly and the mechanics it adds are garbage and unnecessary. It RUINS your production companies and makes all research and buffs for your units and techs tedious,
Helpful: 13
Asura Deva
Not recommended | 09 Mar 2026
I have to say Arms Against Tyranny left me disappointed. The focus trees for Finland, Sweden, Norway, and Denmark are okay on paper, but in practice they feel overly niche and don’t really make the game more exciting.
Helpful: 10
marekiarozer0
Recommended | 08 Jan 2026
The Arms Against Tyranny DLC for Hearts of Iron IV adds a lot of new content and depth. You can relive the Winter War as Finland, preparing your army to defend against a stronger Soviet opponent, or explore alternate
Helpful: 10
Ivan Sovetskiy
Recommended | 26 Jan 2026
Most people only care about Finland and Sweden and I understand why but Norway and Denmark are cool too. I say this is worth it if you actually care about the Nordic countries if you don't then theres no need to. Like
Helpful: 10
Azoubel
Recommended | 09 Feb 2026
Pretty cool. Great focus for Denmark and Finland and good ones for Sweden and Norway. The market mechanics are great which gives small and non aligned nations a little bit of immersion in the war and not stay standing
Helpful: 4