Single-player games like Spacefleet: Heat Death
Below are 10 single-player Steam games similar to Spacefleet: Heat Death, 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 Spacefleet: Heat Death page.
Ranked picks
- 1

Starpoint Gemini Warlords
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacefleet: Heat Death.
Strategy from the front lines! Starpoint Gemini Warlords combines 3rd person capital spaceship combat with 4X strategy and RPG gameplay elements. Build mighty war fleets and send them into battle or lead them into combat yourself. Become the Warlord and conquer the Gemini system!
- 2

Kerbal Space Program
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Simulation with Spacefleet: Heat Death.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 3

Sins of a Solar Empire: Trinity®
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Strategy with Spacefleet: Heat Death.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
- 4

Children of a Dead Earth
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacefleet: Heat Death.
The most scientifically accurate space warfare simulator ever made. Now with Steam Workshop!
- 5

Solar Expanse - Space Exploration Manager
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacefleet: Heat Death.
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries.
- 6

Mars Horizon
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacefleet: Heat Death.
Lead a major space agency as you guide humanity to Mars in this strategy simulation game. Construct a base, design and build rockets, conduct missions throughout the Solar System, and write your own history of Space exploration. Created with support from the European Space Agency.
- 7

Rocket Science
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacefleet: Heat Death.
Take part in a space program. Design spacecrafts and send them off to explore the vast expanses of space. Experience the real scale of the Solar system and the size of its celestial bodies.
- 8

Universe Sandbox
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Simulation and Early Access with Spacefleet: Heat Death.
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
- 9

Jeepney Simulator
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Simulation with Spacefleet: Heat Death.
Embrace your inner jeepney driver! Pick up passengers, calculate change, and weave through traffic in this Filipino-made driving game. Feed your family, customize your jeepneys, and unlock more rides! Don't forget to bring your towel!
- 10

Jeepney Simulator 2
Single-player alternative to Spacefleet: Heat Death — playable solo, no multiplayer required. Shares Simulation with Spacefleet: Heat Death.
Embrace your inner jeepney driver once again in the big, bustling streets of Manella City! Pick up passengers, calculate change, and weave through traffic in this one-of-a-kind driving game. Bring your friends, customize your jeepneys, and face rising quotas. Will you survive? or fade into history?