Games like Galactic Civilizations® I: Ultimate Edition
Games like Galactic Civilizations® I: Ultimate Edition include Stellaris, Sid Meier’s Civilization® VI, ENDLESS Space™ 2, Sid Meier's Civilization® V, and Sid Meier's Civilization®: Beyond Earth™. We matched them by the tags players give Galactic Civilizations® I: Ultimate Edition on Steam (4X, Grand Strategy, Turn-Based, Strategy, and PvE): closest matches first, and among equally close ones the better-known games.

Stellaris
Shared: Grand Strategy · Strategy · 4X

Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · Turn-Based Strategy

ENDLESS Space™ 2
Shared: 4X · Strategy · Turn-Based

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

Sid Meier's Civilization®: Beyond Earth™
Shared: Strategy · 4X · Turn-Based

Galactic Civilizations III
Shared: 4X · Grand Strategy · Turn-Based Strategy

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

Galactic Civilizations® II: Ultimate Edition
Shared: 4X · Grand Strategy · Turn-Based

Master of Orion
Shared: 4X · Strategy · Turn-Based

ENDLESS Legend™
Shared: 4X · Strategy · Turn-Based

Age of History II
Shared: Strategy · Grand Strategy · Turn-Based

HUMANKIND™
Shared: 4X · Strategy · Grand Strategy

XCOM: Enemy Unknown
Shared: Strategy · Turn-Based · Turn-Based Strategy

Heroes of Might and Magic: Olden Era
Shared: Strategy · Grand Strategy · 4X

Europa Universalis IV
Shared: Grand Strategy · Strategy · 4X

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

Old World
Shared: 4X · Strategy · Grand Strategy

Warhammer 40,000: Gladius - Relics of War
Shared: 4X · Strategy · Turn-Based

Galactic Civilizations IV
Shared: Grand Strategy · 4X · Strategy

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

Master of Orion 2
Shared: 4X · Strategy · Turn-Based

Millennia
Shared: 4X · Strategy · Grand Strategy

Age of Wonders: Planetfall
Shared: 4X · Strategy · Turn-Based

Total War: WARHAMMER II
Shared: Strategy · Grand Strategy · Turn-Based Strategy