Single-player games like Citizens: On Mars
Below are 14 single-player Steam games similar to Citizens: On Mars, 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 Citizens: On Mars page.
Ranked picks
- 1

Surviving Mars
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 2

Stellar Settlers: Space Base Builder
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.
- 3

Prison Architect
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect.
- 4

Foundation
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Foundation is a grid-less, laidback medieval city-building game with a focus on organic development, monument construction and resource management.
- 5

Land of the Vikings
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Land of the Vikings is a survival colony sim game. Build and lead your village, and expand it into a thriving city. A wise Jarl must manage resources, survive harsh conditions, and guide their fellow Vikings to work together through social conflict. Skál!
- 6

Endzone - A World Apart
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Endzone is a post-apocalyptic survival city builder, where you start a new civilization with a group of people after an ecological disaster. Build them a new home and ensure their survival in a shattered world, threatened by constant radiation, toxic rain, sandstorms and droughts.
- 7

Rebuild 3: Gangs of Deadsville
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Rebuild a ruined city in this post-apocalyptic mix of strategy and simulation. Manage survivors, scavenge for food and supplies, deal with rival gangs, illness, interpersonal strife and zombie attacks.
- 8

Stronghold: Warlords
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Besiege Great Khans, Imperial warlords and Shōgun commanders in Stronghold: Warlords, the latest 'castle sim' from Firefly Studios. Command AI warlords across the battlefield as you build a castle economy and new gunpowder-fuelled siege engines!
- 9

Warlords Under Siege
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Warlords Under Siege is a mix of RTS and Roguelike genre, where you build a small city and defend it against continuous waves of enemies. Improve your assortment of weapons with each playthrough, unlocking new possibilities to beat the ever-increasing threat.
- 10

Citizens: Far Lands
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Citizens is a blend between turn based city builder and a puzzler for strategy masterminds. Build a thriving settlement, extract and process resources and manage your population by catering to their needs, thus allowing you to build bigger and better!
- 11

Balling Up
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required.
Immerse yourself in a colorful journey through universes that does not forgive any mistakes. Jump well in the ball parkour game, where falling can cost you everything!
- 12

Warlords Battle Simulator
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required. Shares Strategy with Citizens: On Mars.
Test your mettle as a commander in a Tactical Roguelike Auto Battler where positioning and unit combinations are key! Write your own story in Roguelike mode, try out over 100 unique challenges or create interesting battles with the Sandbox tool!
- 13

The Moon 2044
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required.
Explore a secret NCIS facility and discover its dark secret. Take on the role of the XV-11 unit and face hundreds of enemies in a dark sci-fi shooter inspired by old school hits!
- 14

Androsystem Idle
Single-player alternative to Citizens: On Mars — playable solo, no multiplayer required.
Produce Androids and create a Fleet that will help you conquer new planets. Mine valuable minerals that will further increase your production capacity.