Games like Stellar Ascendancy
Games like Stellar Ascendancy include Sid Meier's Civilization® V, Stellaris, Sid Meier’s Civilization® VI, ENDLESS Space™ 2, and ENDLESS Space™ - Definitive Edition. We matched them by the tags players give Stellar Ascendancy on Steam (Strategy, 4X, Turn-Based Strategy, Multiplayer, and Diplomacy): closest matches first, and among equally close ones the better-known games.

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

Stellaris
Shared: Strategy · 4X · Space

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

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

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

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

Master of Orion
Shared: Strategy · 4X · Multiplayer

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

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

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

Heroes of Might and Magic: Olden Era
Shared: Strategy · Turn-Based Strategy · Multiplayer

HUMANKIND™
Shared: Strategy · 4X · Turn-Based Strategy

Sins of a Solar Empire®: Rebellion
Shared: Diplomacy · Multiplayer · Strategy

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

The Battle of Polytopia
Shared: Strategy · Turn-Based Strategy · Multiplayer

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

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

Old World
Shared: Strategy · 4X · Turn-Based Strategy

Galactic Civilizations IV
Shared: 4X · Strategy · Space

Europa Universalis IV
Shared: Strategy · 4X · Diplomacy

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

Anno 2205™
Shared: Strategy · 4X · Sci-fi

Civilization IV: Beyond the Sword
Shared: Strategy · 4X · Turn-Based Strategy

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