Single-player games like EarthRoyale 3
Below are 8 single-player Steam games similar to EarthRoyale 3, 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 EarthRoyale 3 page.
Ranked picks
- 1

Doodle Empires
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Indie and Simulation with EarthRoyale 3.
Doodle Empires is an alternate history sandbox game all about drawing your own nations with your own histories and stories in a variety of maps. Watch your world take shape and evolve over time, and decide which nations will rise and which nations will fall.
- 2

Fantasy Map Simulator
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Indie and Simulation with EarthRoyale 3.
Fantasy Map Simulator: Create and watch imaginary worlds evolve over centuries. Design maps, simulate nations and their politics, and control destinies. See empires rise and fall on your desktop wallpaper. A unique simulation for history buffs and creative minds.
- 3

EarthRoyale
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Simulation and Casual with EarthRoyale 3.
EarthRoyale is a Map simulation Observer game where the game each turn chooses one of many events to edit the world map
- 4

Nations
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Indie and Early Access with EarthRoyale 3.
Select an era, a nation and lead it to greatness or decay. Develop the economy and society, or focus on military and territorial expansion. In Nations you can rule your people for centuries – from ancient times to the modern day and beyond. You shape your state, history and map of the world.
- 5

Hearts of Iron IV
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Simulation with EarthRoyale 3.
Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history.
- 6

Wargame: Red Dragon
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Indie and Simulation with EarthRoyale 3.
The new reference in RTS at its best! The Wargame series returns to duty, larger, richer and more spectacular than ever before. In Wargame Red Dragon, you are engaged in a large-scale conflict where Western forces clash against the Communist bloc.
- 7

Ages of Conflict: World War Simulator
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Indie and Simulation with EarthRoyale 3.
Ages of Conflict is a versatile Map Simulation game where you create and observe custom AI nations battle it out across an infinite number of worlds. Paint beautiful maps and scenarios, and command nations to change history into your liking!
- 8

ACE COMBAT™ 7: SKIES UNKNOWN
Single-player alternative to EarthRoyale 3 — playable solo, no multiplayer required. Shares Simulation with EarthRoyale 3.
Become an ace pilot and soar through photorealistic skies with full 360 degree movement; down enemy aircraft and experience the thrill of engaging in realistic sorties! Aerial combat has never looked or felt better!