Games like Polaris Sector
Games like Polaris Sector include Stellaris, Europa Universalis IV, FTL: Faster Than Light, Sid Meier’s Civilization® VI, and Distant Worlds: Universe. We matched them by the tags players give Polaris Sector on Steam (Strategy, Simulation, 4X, Space, and Real-Time with Pause): closest matches first, and among equally close ones the better-known games.

Stellaris
Shared: Strategy · Space · 4X

Europa Universalis IV
Shared: Strategy · Simulation · Grand Strategy

FTL: Faster Than Light
Shared: Strategy · Space · Real-Time with Pause

Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · 4X

Distant Worlds: Universe
Shared: Strategy · 4X · Space

Distant Worlds 2
Shared: Strategy · Simulation · 4X

Sid Meier's Civilization®: Beyond Earth™
Shared: Strategy · Space · 4X

Hearts of Iron IV
Shared: Strategy · Grand Strategy · Simulation

Total War: WARHAMMER
Shared: Strategy · Simulation · 4X

Europa Universalis V
Shared: Strategy · Simulation · Grand Strategy

Sins of a Solar Empire II
Shared: Strategy · Space · 4X

STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · Space · Singleplayer

Sid Meier's Civilization VII
Shared: Strategy · 4X · Grand Strategy

Dune: Spice Wars
Shared: Strategy · 4X · Simulation

Crusader Kings II
Shared: Strategy · Grand Strategy · Simulation

Terra Invicta
Shared: Strategy · Simulation · 4X

Galactic Civilizations IV
Shared: Simulation · Space · Strategy

ENDLESS Space™ 2
Shared: Strategy · Space · 4X

Rebel Inc: Escalation
Shared: Strategy · Simulation · 4X

Manor Lords
Shared: Strategy · Simulation · Grand Strategy

Victoria 3
Shared: Strategy · Simulation · Grand Strategy

Sid Meier's Civilization® V
Shared: Strategy · 4X · Grand Strategy

Cities: Skylines
Shared: Simulation · Strategy · Singleplayer

NEBULOUS: Fleet Command
Shared: Strategy · Simulation · Grand Strategy