Games like Sector One
Games like Sector One include STAR WARS™: Squadrons, Elite Dangerous, War Thunder, Hardspace: Shipbreaker, and House of the Dying Sun. We matched them by the tags players give Sector One on Steam (Action, Simulation, Space Sim, Flight, and First-Person): closest matches first, and among equally close ones the better-known games.

STAR WARS™: Squadrons
Shared: Flight · Action · Space

Elite Dangerous
Shared: Space Sim · Simulation · Space

War Thunder
Shared: Action · Simulation · Flight

Hardspace: Shipbreaker
Shared: Simulation · Sci-fi · Space

House of the Dying Sun
Shared: Action · Simulation · Space Sim

Kerbal Space Program
Shared: Simulation · Space · Space Sim

X4: Foundations
Shared: Simulation · Space Sim · Space

X Rebirth
Shared: Simulation · Action · Space Sim

Project Wingman
Shared: Action · Flight · Simulation

VTOL VR
Shared: Flight · Simulation · Action

Starpoint Gemini 2
Shared: Simulation · Space · Space Sim

Nuclear Option
Shared: Simulation · Action · Flight

STAR WARS™ Battlefront™ II
Shared: Action · Space · Sci-fi

X-Plane 11
Shared: Simulation · Flight · First-Person

EVERSPACE™
Shared: Action · Space · Space Sim

Trailmakers
Shared: Action · Space · Flight

FPV Kamikaze Drone
Shared: Action · Simulation · First-Person

Half-Life 2
Shared: Action · Sci-fi · First-Person

KovaaK's
Shared: Action · Simulation · First-Person

Microsoft Flight Simulator (2020) 40th Anniversary Edition
Shared: Simulation · Flight · Physics

Uncrashed : FPV Drone Simulator
Shared: Simulation · Flight · First-Person

Starfield
Shared: Space · Sci-fi · First-Person

Microsoft Flight Simulator X: Steam Edition
Shared: Simulation · Flight · First-Person

BONEWORKS
Shared: Action · Physics · First-Person