Single-player games like Poly Universe
Below are 9 single-player Steam games similar to Poly Universe, 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 Poly Universe page.
Ranked picks
- 1
MicroTown
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Indie with Poly Universe.
Build and manage your own settlement! A relaxing village construction and management simulator.
- 2
SYMMETRY
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Indie with Poly Universe.
A research spaceship reaches an abandoned planet. Nothing is what it seems here and the situation quickly slips out of control. Can the crew manage to survive and get back home?
- 3
Hearthlands
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Indie with Poly Universe.
Hearthlands is a medieval/fantasy city-building real time strategy game in which you take a role of a king in a procedurally generated world. You can not control your subjects directly; instead you focus on city-building, resource management, diplomacy, magic, etc.
- 4
Townsmen - A Kingdom Rebuilt
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Simulation with Poly Universe.
Townsmen – A Kingdom Rebuilt hands the crown to you: Guide your people from their first steps in a small village to a massive medieval metropolis with thousands of inhabitants.
- 5
Space for Sale
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Simulation with Poly Universe.
Space for Sale is an interplanetary, top-down Space Realty management game with a focus on problem-solving and exploration. Played either solo or with a friend, it's up to you to transform wild, uninhabited lands into bustling communities!
- 6
Per Aspera
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Indie with Poly Universe.
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
- 7
Surviving Mars
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Simulation with Poly Universe.
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.
- 8
Empire Architect
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Indie with Poly Universe.
Empire Architect is an ancient city-building real time strategy game, with elements from grand strategies sprinkled in for good measure. The levels are procedurally generated, and you have limited control over your subjects
- 9
Kingdoms and Castles
Single-player alternative to Poly Universe — playable solo, no multiplayer required. Shares Strategy and Indie with Poly Universe.
Kingdoms and Castles is a city-building simulation game about growing a kingdom from a tiny hamlet to a sprawling city and imposing castle. Make trade agreements, alliance, and war with neighboring AI controlled kingdoms. Each villager and resource is individually simulated.