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Iron Harvest: Operation Eagle (PC cover
Game Box forIron Harvest: Operation Eagle (PC)

Iron Harvest: Operation Eagle

The first big expansion to Iron Harvest, released in 2020. Operation Eagle introduces, among other things, a fourth faction, Usonia, a campaign dedicated to it and new units for the original nations. It is both an expansion and a standalone game.

This is Iron Harvest expansion pack.

Strategy | RTS | co-op | alternative history | interwar period | early 20th century | dieselpunk | 1920+ universe

Iron Harvest: Operation Eagle Release Date







Operation Eagle is an add-on to Iron Harvest, a game developed by German studio KING Art Games, set in the 1920+ universe by Polish illustrator Jakub Rozalski. The main attraction of the expansion is the Usonia faction, modelled on the United States of America. The developers also added a few novelties in the factions known from the basic version of the game.


Operation Eagle introduces to the game a new campaign dedicated to the American Union of Usonia, enriched by about 25 minutes of cinematic interludes. The country managed to avoid the Great War - during which it focused on economic and technological development, making it a world power. The Usonian army also stands out from the troops in the base game in terms of culture and equipment, with the powerful "diesel birds" at the forefront.


The add-on does not try to reinvent the wheel and focuses on expanding the game's content rather than changing well-known mechanics. The Usonia faction includes three playable heroes and over 30 infantry units, buildings and mechs. In addition, all factions available in the base version of the game have received new flying units and many skins to decorate their troops with. Usonia's specialty is airships - divided into different types, such as warships or flying motorbikes, with the help of which we drop soldiers behind enemy lines or drop bombs.

Operation Eagle is a classic expansion, but can also be purchased as a standalone product. In the latter case, the game allows us to play the Usonia campaign, the first five missions of the Polania campaign, and multiplayer and challenge maps as these two factions.

Game modes

The expansion is playable in single player mode, co-op (campaign only) and multiplayer (expanded with several new maps). New seasons are regularly scheduled in the network game mode, allowing players to compete against others in tournaments for which they receive rewards from the developers.

Technical aspects

Operation Eagle keeps the dieselpunk, interwar design, and the new units are as detailed as those known from the base game.

Game mode: single / multiplayer   Multiplayer mode: Internet   Player counter: 1-4  

PEGI rating Iron Harvest: Operation Eagle

Age rating. The PEGI rating considers the age suitability of a game, not the level of difficulty. Game contains depictions of violence.

Iron Harvest: Operation Eagle System requirements

PC / Windows

PC / Windows

  • Minimum:
  • Intel Core i5-4460 3.2 GHz / AMD FX-8300 3.3 GHz
  • 8 GB RAM
  • graphic card 4 GB GeForce GTX 960 or better
  • Windows 10 64-bit
  • Recommended:
  • Intel Core i7-8700K 3.7 GHz / AMD Ryzen 7 1700 3.0 GHz
  • 16 GB RAM
  • graphic card 6 GB GeForce RTX 2060 or better
  • Windows 10 64-bit
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