Galaxy of Iron is described as 'Iron Sky Games is proud to present Galaxy of Iron, a real-time strategy game. Choose your race, build your fleet and conquer the galaxy. Research different power-ups, customize your fleets and engage the enemy'. There are three games similar to Galaxy of Iron for Windows, Wine, Mac, Online / Web-based and Steam. The best alternative is EVE Online, which is free. Other Galaxy of Iron like games are Starfall Tactics (Free) and Nexus: The Jupiter Incident (Paid).
EVE Online is a massive multiplayer online game that offers limitless potential to discover, explore and conquer an amazing science fiction universe where you pilot spaceships, fight, trade, and form corporations and alliances with other players.
Powered by Unreal Engine 4, Starfall Tactics allows you to assemble and customize your own spaceship flotilla and lead it into battle. Pick a side, fight other players and create a name for yourself in a decaying, war-torn galaxy.
The game is set in the 22nd Century. The player is Marcus Cromwell, a famed spacecraft captain whose father, Richard Cromwell, the first spaceborn human, captained the colony ship Noah's Ark through a wormhole near Mars that was presumed destroyed when the wormhole collapsed.