Games like Astra Exodus
Games like Astra Exodus include Stellaris, Sid Meier’s Civilization® VI, Sid Meier's Civilization® V, Europa Universalis IV, and Warhammer 40,000: Gladius - Relics of War. We matched them by the tags players give Astra Exodus on Steam (Strategy, Indie, Real Time Tactics, 4X, and Turn-Based): closest matches first, and among equally close ones the better-known games.

Stellaris
Shared: Strategy · 4X · Sci-fi

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

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

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

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

ENDLESS Space™ 2
Shared: Strategy · 4X · Sci-fi

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

MENACE
Shared: Strategy · Grand Strategy · Turn-Based

Warhammer 40,000: Mechanicus
Shared: Strategy · Sci-fi · Turn-Based

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

Battle Brothers
Shared: Strategy · Grand Strategy · Turn-Based

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

Starship Troopers: Terran Command
Shared: Strategy · Sci-fi · Wargame

Into the Breach
Shared: Strategy · Indie · Turn-Based

Total War: ROME REMASTERED
Shared: Strategy · Grand Strategy · 4X

Total War: THREE KINGDOMS
Shared: Strategy · Grand Strategy · Real Time Tactics

Interstellar Space: Genesis
Shared: Strategy · Indie · 4X

XCOM 2
Shared: Strategy · Sci-fi · Turn-Based Tactics

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

STAR WARS Zero Company™
Shared: Strategy · Sci-fi · Turn-Based

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

Total War: EMPIRE – Definitive Edition
Shared: Strategy · Grand Strategy · Turn-Based

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

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