IMHO.

Single-player games like Dominus Orbis Maris 1400: Mare Nostrum

Below are 8 single-player Steam games similar to Dominus Orbis Maris 1400: Mare Nostrum, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Dominus Orbis Maris 1400: Mare Nostrum page.

Ranked picks

  1. 1
    East India Company — Steam game cover

    East India Company

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy with Dominus Orbis Maris 1400: Mare Nostrum.

    Trade exotic goods, command fleets, and dominate 17th-century seas. This blend of real-time strategy and naval warfare lets you build a trading empire across Europe and Asia. Strategize trade routes, engage in epic naval battles, and expand your influence to become the ultimate maritime force.

    2009Strategy9.99 USDSingle-playerSimilar games →
  2. 2
    Sailing Era — Steam game cover

    Sailing Era

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy and Simulation with Dominus Orbis Maris 1400: Mare Nostrum.

    Every voyage is a journey of "Sailing & Beyond" in Sailing Era! Navigate your fleet and sail for fun; run a business; have a romantic encounter in the tavern; capture pirates amid intense battle; explore inland for treasure... Experience foreign culture, make novel discoveries, and sail away!

    2023StrategyAdventureSimulation24.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    Sailors: Age of Corsairs — Steam game cover

    Sailors: Age of Corsairs

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy and Indie with Dominus Orbis Maris 1400: Mare Nostrum.

    Become a merchant, pirate, or privateer in the 17th century Caribbean! Join colonial powers or fight for gold and glory in this epic sandbox crew simulator!

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    Port Royale 4 — Steam game cover

    Port Royale 4

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy and Simulation with Dominus Orbis Maris 1400: Mare Nostrum.

    Set sail and join the colonial powers of Spain, England, France and the Netherlands in their fight for supremacy of the Caribbean in the 17th century.

    2020StrategySimulation39.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Commander: Conquest of the Americas — Steam game cover

    Commander: Conquest of the Americas

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy with Dominus Orbis Maris 1400: Mare Nostrum.

    Set sail for the New World and shape the destiny of your empire. Lead one of seven European factions in this blend of colony management, exploration, and naval strategy. Build settlements, explore vast territories, and secure your legacy through diplomacy and tactical naval combat.

    2010Strategy9.99 USDSingle-playerSimilar games →
  6. 6
    Port Royale 3 — Steam game cover

    Port Royale 3

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy and Simulation with Dominus Orbis Maris 1400: Mare Nostrum.

    The Caribbean, in the turbulent 17th Century. The mighty kingdoms of Spain, England, France and the Netherlands fight over the colonies. And there you are, a young sea captain whose only goal is to become the most powerful man in the New World.

    2012ActionStrategySimulation14.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Winds Of Trade — Steam game cover

    Winds Of Trade

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy and Simulation with Dominus Orbis Maris 1400: Mare Nostrum.

    Winds Of Trade is a strategy game about running an ocean trading company in the 18th and 19th centuries. Building your trading empire will not be your only goal! Ruthless pirates, shady smugglers, wartime and fierce competitors will make the way to the top a long and hard road for you!

    2017StrategySimulation11.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Computer Tycoon — Steam game cover

    Computer Tycoon

    Single-player alternative to Dominus Orbis Maris 1400: Mare Nostrum — playable solo, no multiplayer required. Shares Strategy and Indie with Dominus Orbis Maris 1400: Mare Nostrum.

    Computer Tycoon is a fairly complex Business Grand Strategy game about Computer Evolution. Start in the 70s, invent until 2034, create the best computer systems, upgrade your infrastructure, lead a team, and alter computer history! It is time to "Think Different"

    2017StrategyIndieSimulation19.99 USDDeck PlayableSingle-playerSimilar games →