Single-player games like Oxygen Not Included
Below are 22 single-player Steam games similar to Oxygen Not Included, 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 Oxygen Not Included page.
Ranked picks
- 1
Surviving Mars
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Simulation with Oxygen Not Included.
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
Space Haven
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
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.
- 3
RimWorld
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
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.
- 4
Planetbase
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
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.
- 5
The Crust
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Simulation with Oxygen Not Included.
Automate a lunar base as you become the savior of humanity exploring the future on the moon. Mine, craft, research, and trade resources with Earth in this gripping narrative basebuilder.
- 6
Aven Colony
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
Build a new home for humanity in Aven Colony. Discover Aven Prime - an alien planet of deserts, tundras, and wetlands light years from earth. Build your colonies into massive, sprawling cities whilst dealing with the challenges faced when settling on a new world.
- 7
Against the Storm
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Simulation with Oxygen Not Included.
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
- 8
Dwarf Fortress
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
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.
- 9
Factorio
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
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.
- 10
Tropico 4
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Simulation with Oxygen Not Included.
The world is changing and Tropico is moving with the times - geographical powers rise and fall and the world market is dominated by new players with new demands and offers - and you, as El Presidente, face a whole new set of challenges.
- 11
Subnautica
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
- 12
Terraria
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 13
Banished
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
In this city-building strategy game, you control a group of exiled travelers who decide to restart their lives in a new land. They have only the clothes on their backs and a cart filled with supplies from their homeland. The townspeople of Banished are your primary resource.
- 14
ASTRONEER
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
Interact with strange new worlds in a unique and tactile way, molding the environment itself as if it were clay in your hands. Build your base, master resource management, automate your production lines, and more as you unravel the mysteries of the universe, alone or with friends.
- 15
Don't Starve Together
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
- 16
Don't Starve
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie and Simulation with Oxygen Not Included.
Don’t Starve is an uncompromising wilderness survival game full of science and magic. Enter a strange and unexplored world full of strange creatures, dangers, and surprises. Gather resources to craft items and structures that match your survival style.
- 17
Griftlands
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
Griftlands is a deck-building roguelite where you negotiate, fight, steal or otherwise persuade others to get your way. Every decision is important, be it the jobs you take, the friends you make, or the cards you collect.
- 18
Mark of the Ninja
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
In Mark of the Ninja, you'll know what it is to truly be a ninja. You must be silent, agile and clever to outwit your opponents in a world of gorgeous scenery and flowing animation. Marked with cursed tattoos giving you heightened senses, every situation presents you with options.
- 19
Rotwood
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required.
The world has been thrown into chaos, and it's up to you and your friends to battle the corrupted beasts of the Rotwood. Upgrade your gear, choose your preferred weapon, and hone your skills to defend your safe haven.
- 20
Mark of the Ninja: Remastered
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
In Mark of the Ninja, you'll know what it is to truly be a ninja. You must be silent, agile and clever to outwit your opponents in a world of gorgeous scenery and flowing animation.
- 21
Hot Lava
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
The Floor is Hot Lava! Run, jump, climb, and surf across nostalgia-packed environments flooded with hot molten lava. Explore alone, or join your friends. And whatever you do, don’t touch the floor.
- 22
Invisible, Inc.
Single-player alternative to Oxygen Not Included — playable solo, no multiplayer required. Shares Indie with Oxygen Not Included.
Take control of Invisible's agents in the field and infiltrate the world's most dangerous corporations. Stealth, precision, and teamwork are essential in high-stakes, high-profit missions, where every move may cost an agent their life.