Single-player games like Sector One
Below are 8 single-player Steam games similar to Sector One, 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 One page.
Ranked picks
- 1
Expedition Astra
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
Old machines guard silent asteroid sites across the outer solar system. Pilot a 6DoF spacecraft, fight around the rock, dock with old vessels, and touch the asteroid to extract rare materials.
- 2
Remnant Protocol
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
The assassination of the Blessed Mother has plunged the galaxy in darkness. Usurpers rule with absolute authority, and blood flows in rivers of red across the stars. Only the Protocol can restore Her light.
- 3
Timewell: Trail of Celestes
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
Dive into an immersive space shooter adventure with Timewell: Trail of Celestes. As SAT-V, explore new planets and fight against Constructs in a RPG storyline. Customize her skills and adaptations for a unique space combat experience. Are you ready to guide SAT-V through a perilous universe?
- 4
Absolute Territory
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
Fly futuristic starfighters with intense dogfights against slow warships and nimble enemy fighters. Choose your ship, customize loadouts with various guns and missiles. Use first-person cockpit or third person. Use power settings across engines, shields, and engines to gain the advantage in combat.
- 5
Starpoint Gemini 2
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
Captain your own space ship and roam the galaxy in 3D in this tactical space simulator with tons of RPG depth ! Space has never looked so inviting - but images can betray...It has been two years since the end of the second Gemini war, the situation in the wartorn system is further from resolution than ever.
- 6
Evochron Mercenary
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
- 7
Descent: FreeSpace – The Great War
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
Volition's classic is back. Descent: FreeSpace is the quintessential old school space shooter. With a deep story, great graphics and engaging battles against fighters to capital ships it keeps you moving. Breakout that flight stick and enroll with the Grand Terran Alliance today.
- 8
Chorus
Single-player alternative to Sector One — playable solo, no multiplayer required. Shares Action with Sector One.
Take control of Nara on a quest to destroy the dark cult that created her. Unlock devastating weapons & mind-bending abilities in an evolution of the space-combat shooter. Along with Forsaken, her sentient starfighter, explore ancient temples, engage in zero-g combat & venture beyond waking reality.