Games like Galactic Civilizations IV: Hegemon
Games like Galactic Civilizations IV: Hegemon include Stellaris, Galactic Civilizations IV, Sid Meier’s Civilization® VI, Sins of a Solar Empire®: Rebellion, and X4: Foundations. We matched them by the tags players give Galactic Civilizations IV: Hegemon on Steam (Space, Simulation, Grand Strategy, Strategy, and 4X): closest matches first, and among equally close ones the better-known games.

Stellaris
Shared: Space · Grand Strategy · Strategy

Galactic Civilizations IV
Shared: Space · Simulation · Grand Strategy

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

Sins of a Solar Empire®: Rebellion
Shared: Simulation · Space · Strategy

X4: Foundations
Shared: Space · Simulation · 4X

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

Sid Meier's Civilization®: Beyond Earth™
Shared: Space · Strategy · Sci-fi

Europa Universalis IV
Shared: Grand Strategy · Simulation · Strategy

ENDLESS Space™ - Definitive Edition
Shared: Space · Strategy · 4X

Sid Meier's Civilization® V
Shared: Strategy · 4X · Turn-Based Strategy

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

Crusader Kings II
Shared: Grand Strategy · Strategy · Simulation

Heroes of Might and Magic: Olden Era
Shared: Strategy · Grand Strategy · Simulation

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

Kerbal Space Program
Shared: Space · Simulation · Sandbox

Master of Orion
Shared: Space · Strategy · 4X

Elite Dangerous
Shared: Space · Simulation · Sci-fi

Old World
Shared: Simulation · Strategy · Grand Strategy

No Man's Sky
Shared: Space · Sci-fi · Exploration

HUMANKIND™
Shared: Strategy · 4X · Grand Strategy

Crusader Kings III
Shared: Strategy · Grand Strategy · Simulation

Terra Invicta
Shared: Simulation · Strategy · Grand Strategy

Age of History II
Shared: Strategy · Grand Strategy · Simulation

Distant Worlds: Universe
Shared: Space · Strategy · Simulation