Is it a bird, is it a plane? Maybe it’s a bit of both. The American Union of Usonia and their giant diesel-punk airships have entered the battlefields of Iron Harvest. KING Art Games today have released Iron Harvest: Operation Eagle, the first major add-on content for the critically acclaimed RTS Iron Harvest.

Iron Harvest: Operation Eagle introduces the new faction of Usonia and the sub-faction Arabia. The latest DLC features the full single and co-op campaign for Usonia, introduces the massive Usonia flying units, adds new multiplayer maps, and more.

The Operation Eagle add-on contains:

  • Usonia Faction with over 20 new units
  • Complete Usonia Campaign (single player & co-op)
  • Three new playable heroes
  • New playable allies from the Arabia faction
  • New flying units for all factions
  • New structures and anti-air defenses for all factions
  • New multiplayer maps

*Every Iron Harvest player will get access to new units, buildings, and maps via matchmaking.

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Jerry Paxton

A long-time fan and reveler of all things Geek, I am also the Editor-in-Chief and Founder of