Single-player games like Spacebase DF-9
Below are 21 single-player Steam games similar to Spacebase DF-9, 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 Spacebase DF-9 page.
Ranked picks
- 1
Space Haven
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
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
Oxygen Not Included
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Indie and Simulation with Spacebase DF-9.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 3
Planetbase
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.
- 4
RimWorld
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
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.
- 5
Prison Architect
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect.
- 6
Dwarf Fortress
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
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.
- 7
Surviving Mars
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacebase DF-9.
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
Endzone - A World Apart
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
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.
- 9
Space Engineers
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
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.
- 10
The Spatials: Galactology
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
The Spatials are back with Galactology! Design, build and protect your colony station from the many enemies you will make while exploring the galaxy and exploding their homeworlds.
- 11
Starship Theory
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
Starship Theory is a ship building survival game. Mine and trade to gather resources. Plan and construct new upgrades. Train and manage crew. Fight to survive.
- 12
Startopia
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Simulation with Spacebase DF-9.
A once thriving network of space stations and planets have been left lifeless, redundant scars of the apocalypse. Into this age of darkness comes light. You will lead the way in rebuilding the network of space stations to a standard accepted by the individual alien races, attracting them to harness their expertise and research new...
- 13
Maia
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy and Indie with Spacebase DF-9.
Maia is a colony building game set in the not-so-distant future. Your colonists make planetfall on a hostile world and you must ensure their survival and their safety, constructing their off-world habitat from almost nothing and sheltering them from a dangerous, often deadly environment.
- 14
Psychonauts
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required.
A Psychic Odyssey Through the Minds of Misfits, Monsters, and Madmen. This classic action/adventure platformer from acclaimed developers Double Fine Productions follows the story of a young psychic named Razputin.
- 15
Psychonauts 2
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required.
Combining quirky missions and mysterious conspiracies, Psychonauts 2 is a platform-adventure game with cinematic style and tons of customizable psychic powers.
- 16
Brutal Legend
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Strategy with Spacebase DF-9.
Brütal Legend is an action-adventure that marries visceral action combat with open-world freedom. Set in a universe somewhere between Lord of the Rings and Spinal Tap, it’s a fresh take on the action/driving genre, which in this case is full of imitation cover bands, demons intent on enslaving humanity and Heavy metal tunes.
- 17
Grim Fandango Remastered
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required.
One of the most acclaimed adventure games of all time is now back, better than ever. Grim Fandango Remastered has the all the beautiful art and engaging story fans remember, but has also been remastered to look, sound, and control even better than the award-winning original release.
- 18
Broken Age
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required. Shares Indie with Spacebase DF-9.
A family friendly, hand-animated, puzzle-filled adventure game with an all-star cast, including Elijah Wood, Jack Black and Masasa Moyo. Funded by a record breaking crowdfunding campaign and designed by industry legend Tim Schafer, Broken Age is a timeless coming-of-age story.
- 19
Day of the Tentacle Remastered
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required.
Originally released by LucasArts in 1993 as a sequel to Ron Gilbert’s ground breaking Maniac Mansion, Day of the Tentacle is back in a remastered edition that features all new hand-drawn, high resolution artwork, with remastered audio, music and sound effects.
- 20
Costume Quest
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required.
A Halloween adventure from Tim Schafer's Double Fine Productions.
- 21
Full Throttle Remastered
Single-player alternative to Spacebase DF-9 — playable solo, no multiplayer required.
Originally released by LucasArts in 1995, Full Throttle is a classic graphic adventure game from industry legend Tim Schafer, telling the story of Ben Throttle; butt-kicking leader of biker gang the Polecats, who gets caught up in a tale of Motorcycles, Mayhem and Murder.