Single-player games like Solargene
Below are 16 single-player Steam games similar to Solargene, 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 Solargene page.
Ranked picks
- 1
Space Haven
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
- 2
Workers & Resources: Soviet Republic
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Simulation with Solargene.
Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity.
- 3
The Crust
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Simulation with Solargene.
Build and automate a lunar colony that Earth depends on. Mine regolith, run conveyor-and-drone factories above and below the surface, manage colonists, trade with rival Earth factions — and play a story campaign with multiple endings.
- 4
Captain of Industry
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
Build an industrial empire on a remote island. Mine resources, reshape terrain with excavators, grow food, construct factories, lay train tracks, and trade with the outside world. Research 100+ technologies to advance from basic metal smelting all the way to nuclear power and space flight.
- 5
Cliff Empire
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
After a nuclear war life on the surface became impossible. A 300m thick radioactive fog covered the Earth. We are looking for bold active people to manage the process of restoring life on Earth. Join!
- 6
Surviving Mars
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Simulation with Solargene.
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.
- 7
Endzone - A World Apart
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
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.
- 8
Per Aspera
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
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.
- 9
Stellaris
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Simulation with Solargene.
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
- 10
RimWorld
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 11
Terra Invicta
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Simulation with Solargene.
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
- 12
Space Engineers
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
Space Engineers is a sandbox engineering game where you design and build ships, stations, and planetary bases in a fully destructible environment. Explore planets and space, mine resources, survive hazards, and engage in combat alone or with friends in Creative or Survival modes.
- 13
Factorio
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 14
Kenshi
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
A free-roaming squad based RPG. Focusing on open-ended sandbox gameplay features rather than a linear story. Be a trader, a thief, a rebel, a warlord, an adventurer, a farmer, a slave, or just food for the cannibals. Train your men up from puny victims to master warriors.
- 15
Anno 1800
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Simulation with Solargene.
Anno 1800™ – Lead the Industrial Revolution! Welcome to the dawn of the Industrial Age. The path you choose will define your world. Are you an innovator or an exploiter? A conqueror or a liberator? How the world remembers your name is up to you.
- 16
Dwarf Fortress
Single-player alternative to Solargene — playable solo, no multiplayer required. Shares Strategy and Indie with Solargene.
Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.