Single-player games like City of Atlantis
Below are 10 single-player Steam games similar to City of Atlantis, 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 City of Atlantis page.
Ranked picks
- 1

Stronghold: Definitive Edition
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy with City of Atlantis.
Greetings sire! Your stronghold awaits you. Build a castle economy, besiege unforgettable villains and return to the 'castle sim' that started it all. Experience this classic RTS with upgraded visuals, modernised gameplay, Steam multiplayer and a new campaign.
- 2

Stronghold HD (2012)
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy with City of Atlantis.
The original castle sim, Stronghold HD allows you to design, build and destroy historical castles. Engage in medieval warfare against the AI in one of two single player campaigns or online with up to 8 players.
- 3

Theos: Cities Of Myth
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy and Indie with City of Atlantis.
A modern take on classic city-builders, Theos: Cities of Myth lets you develop a thriving metropolis dedicated to one of 7 Greek Deities. Raise an imposing sanctuary, meet your citizens’ needs, and found a city worthy of the Gods.
- 4

Synergy
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy and Indie with City of Atlantis.
An ecosystem City Builder in a unique world. Build your settlement, manage your workers and optimize your resources. Analyzing your environment, spreading new plants, and harvesting them are key to prosperity.
- 5

Pharaoh™: A New Era
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy with City of Atlantis.
The legendary city-builder returns! Lead the creation of one of the greatest civilizations the world has ever seen in this HD remake with modernized UI. Build monuments, manage your population and explore 4,000 years of history through over a hundred hours of gameplay.
- 6

Deisim
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy and Indie with City of Atlantis.
Live the experience of being a powerful god and create the world to see the growth of mankind.
- 7

Flooded
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy with City of Atlantis.
Flooded is a reversed city-builder, in which you need to optimize your production on an island that shrinks over time. Gather enough resources to flee to safety, while the surrounding world is getting flooded.
- 8

Microcivilization
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy and Indie with City of Atlantis.
Incremental clicker strategy, where you expand, construct, research, fight, collect heroes and make choices between good and evil. Ascend through difficulty tiers by playing through challenge campaign going back and forth through history. Mammoths included.
- 9

CountryBalls Heroes
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy with City of Atlantis.
CountryBalls Heroes is a game where you get to play as your favorite Countryball. Become a legend by leading massive Countryball armies. Create your forces, build master-planned cities, gather powerful artifacts and prove that your Countryball is the most powerful.
- 10

Stormbinders
Single-player alternative to City of Atlantis — playable solo, no multiplayer required. Shares Strategy with City of Atlantis.
Stormbinders is a turn-based strategy game with a unique fantasy setting. Classic tactical gameplay meets a new level of strategic depth in a battle for survival against chaotic magic storms.