Single-player games like Deep Space
Below are 13 single-player Steam games similar to Deep Space, 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 Deep Space page.
Ranked picks
- 1
EVERSPACE™ 2
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Adventure with Deep Space.
EVERSPACE 2 is a fast-paced single-player spaceship shooter with exploration in space and on planets, tons of loot, RPG elements, mining, and crafting. Experience an exciting sci-fi story set in a vivid, handcrafted open world full of secrets, puzzles, and perils.
- 2
The Outer Worlds
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares RPG with Deep Space.
The Outer Worlds is an award-winning single-player RPG from Obsidian Entertainment and Private Division. As you explore a space colony, the character you decide to become will determine how this player-driven story unfolds. In the colony's corporate equation, you are the unplanned variable.
- 3
Deep Rock Galactic
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action with Deep Space.
Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!
- 4
Void Crew
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Adventure with Deep Space.
Void Crew is a Chaotic, Co-op Roguelite game for 1 to 6 players: Outfit your spaceship and crew for thrilling quests, brave fierce enemies in Space Battles... and try not to panic!
- 5
Atomic Heart
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Adventure with Deep Space.
In a mad and sublime utopian world, take part in explosive encounters. Adapt your fighting style to each opponent, use your environment and upgrade your equipment to fulfill your mission. If you want to reach the truth, you'll have to pay in blood.
- 6
System Shock 2: 25th Anniversary Remaster
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Adventure with Deep Space.
System Shock® 2: 25th Anniversary Remaster is a genre defining experience that established innovative game-play mechanics that are a staple of the FPS and RPG genre today. Survive the wretched corridors of the Von Braun. Your training has prepared you for this.
- 7
Warhammer 40,000: Space Marine 2
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Adventure with Deep Space.
Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes.
- 8
Dead Space
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Adventure with Deep Space.
The sci-fi survival-horror classic returns, completely rebuilt to offer an even more immersive experience — including visual, audio, and gameplay improvements — while staying faithful to the original game’s thrilling vision.
- 9
UNDEFINED
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Indie with Deep Space.
An exciting first-person game, which takes place in the near future. You wake up in a strange place "Discovery One" you are hiding from the outside world. You are increasingly starting a casual relationship.
- 10
The Lost Dungeon Of Knight
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Indie with Deep Space.
The Lost Dungeon Of Knight is a first-person adventure game with puzzle elements.
- 11
Curse of the dungeon
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Indie with Deep Space.
You have to explore amazing places to get to the secret secrets of your soul.
- 12
Adventure Galaxy
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Indie and Adventure with Deep Space.
Adventure Galaxy - an indie game with a first-person view, the game takes place on a space station in space.
- 13
Night Darkness
Single-player alternative to Deep Space — playable solo, no multiplayer required. Shares Action and Indie with Deep Space.
You have to take control of one of the most famous mercenaries and complete a special mission to save humanity from certain death.