Single-player games like Sector Unknown
Below are 19 single-player Steam games similar to Sector Unknown, 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 Sector Unknown page.
Ranked picks
- 1
Colony Ship: A Post-Earth Role Playing Game
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Colony Ship is a turn-based, party-based role-playing game set aboard a generation ship launched to Proxima Centauri. The game features a detailed skill-based character system, multiple ways to handle quests, choices & consequences, and branching dialogue trees.
- 2
New Arc Line
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Take a stand in the eternal conflict between Arcane Magic and Steampunk Revolution and tip the uneasy balance between sorcery, elves, dwarves and mysterious monsters on one side and steampunk gadgets, zeppelins, and tesla guns on the other in this single-player, party-based, story-rich RPG.
- 3
Wasteland 3
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Following the critically acclaimed 2014 Game of the Year winner Wasteland 2, the RPG series that pioneered the post-apocalyptic genre in video games returns with Wasteland 3.
- 4
Swordhaven: Iron Conspiracy
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Swordhaven is a party‑based low‑magic fantasy cRPG with a deep character creation system, rich storytelling, and seamless turn‑based/RTwP combat. Explore Nova Drakonia, uncover ancient secrets, meet hundreds of NPCs with unique quests, and shape the fate of the world through your choices.
- 5
Geneforge 2 - Infestation
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Wildly open-ended adventure in a unique fantasy world. Use battle or diplomacy and trickery to change the world, served by an army of custom-made mutant monsters. Almost 90 zones to explore and 50+ hours of gameplay. Enormous range of abilities, factions, quests, and paths to victory.
- 6
Stellar Tactics
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
A Sci-Fi role-playing game featuring turn-based ground combat, space exploration, deep character customization and a massive living universe with thousands of star systems. Equip your ships with the best equipment you can find, gather a powerful crew of mercenaries and set out into the void!
- 7
The Age of Decadence
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
The Age of Decadence is a turn-based, hardcore role-playing game set in a low magic fantasy world. The game features a detailed skill-based character system, multiple skill-based ways to handle quests, choices & consequences, and extensive dialogue trees.
- 8
ATOM RPG: Post-apocalyptic indie game
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
ATOM RPG is a post-apocalyptic indie game, inspired by classic CRPGs: Fallout, Wasteland, Deus Ex, Baldur's Gate and many others.
- 9
Mass Effect (2007)
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
As Commander Shepard, you lead an elite squad on a heroic, action-packed adventure throughout the galaxy.
- 10
Wasteland 1 - The Original Classic
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
For the first time in over 20 years, we are heralding the return of a much loved piece of gaming history with the classic RPG, Wasteland! Mutants. Again. Even more than there were last time: they seem to materialize out of the very grains of the radioactive desert sand. Venomous yellow eyes.
- 11
Fallout 4
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
From Bethesda Game Studios, the award-winning creators of Starfield and The Elder Scrolls V: Skyrim, comes Fallout 4. A landmark in open-world RPG design and winner of over 200 ‘Best Of’ honors, including the DICE and BAFTA Game of the Year.
- 12
Pathfinder: Kingmaker — Enhanced Plus Edition
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Pathfinder: Kingmaker - Enhanced Plus Edition is the first isometric party-based cRPG set in the Pathfinder fantasy universe. Enjoy a classic RPG experience inspired by games like Baldur's Gate, Fallout 1 and 2 and Arcanum. Explore and conquer the Stolen Lands and make them your kingdom!
- 13
The Invincible
Single-player alternative to Sector Unknown — playable solo, no multiplayer required.
Rethink human’s dominion in The Invincible: a story-driven adventure set in a hard sci-fi world by Stanisław Lem. Discover planet Regis III as scientist Yasna, use atompunk tools looking for a missing crew and face unforeseen threats. Make choices in a philosophical story that’s driven by science.
- 14
Wasteland Remastered
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
The RPG classic rises from the nuclear ashes! Wasteland Remastered is an overhaul of the 1988 title that brought the post-apocalypse to video games. See where the Wasteland series began and experience the character and world the sequels are built on.
- 15
Jagged Alliance 3
Single-player alternative to Sector Unknown — playable solo, no multiplayer required.
The country of Grand Chien is thrown into chaos when the elected president goes missing and the paramilitary force known as “the Legion” seizes control. Hire mercs, meet interesting characters, and fight in tactically deep turn-based combat in this true successor to a beloved franchise.
- 16
Age of Gladiators
Single-player alternative to Sector Unknown — playable solo, no multiplayer required.
"Age of Gladiators" is a single-player strategy/management sim set at the height of the bloody gladiatorial games in ancient Rome. As your fighters increase in level, it will be up to you to decide how to forge their attributes and abilities.
- 17
Age of Gladiators II: Rome
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Age of Gladiators II: Rome is a single-player strategy/management sim set at the height of the bloody gladiatorial games in ancient Rome. As your fighters increase in level, it will be up to you to decide how to forge their attributes and abilities. Build your story. Build your empire.
- 18
Raiders! Forsaken Earth
Single-player alternative to Sector Unknown — playable solo, no multiplayer required. Shares RPG with Sector Unknown.
Raiders! Forsaken Earth is a strategy/management game where you play as the leader of a merciless band of post-apocalyptic marauders. Build up your organization while extorting, kidnapping, and destroying the last remnants of civilization. The wasteland doesn't need another hero...
- 19
Age of Gladiators II: Death League
Single-player alternative to Sector Unknown — playable solo, no multiplayer required.
Age of Gladiators II: Death League is a single-player strategy game set in the futuristic 3000AD, during the rebirth of the violent and hyper-competitive gladiatorial games. Manage your franchise while forging the attributes and abilities of your warriors. Build your story. Build your empire.