: Supports multiplayer cross-play with players on Steam, though the GOG GALAXY Client is required for online features. Gameplay Overview
: Adds the Usonia faction, new flying units, and a full campaign. Iron Harvest Deluxe Edition (v1.2.5.2547) [GOG]
: Access to the Digital Soundtrack, Digital Artbook , and a Digital Weapons Manual. : Supports multiplayer cross-play with players on Steam,
The Deluxe Edition serves as a comprehensive collection, bundling the base game with significant post-launch additions: new flying units