Games like Eternal Warfare
Games like Eternal Warfare include Age of Empires III: Definitive Edition, Sid Meier’s Civilization® VI, Forts, Factorio, and Total War: THREE KINGDOMS. We matched them by the tags players give Eternal Warfare on Steam (Turn-Based Strategy, Strategy, Base Building, Wargame, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Age of Empires III: Definitive Edition
Shared: Strategy · Base Building · Multiplayer

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

Forts
Shared: Base Building · Strategy · Multiplayer

Factorio
Shared: Base Building · Strategy · Multiplayer

Total War: THREE KINGDOMS
Shared: Strategy · Turn-Based Strategy · Multiplayer

Foxhole
Shared: Wargame · Base Building · Military

Company of Heroes 3
Shared: Strategy · Wargame · Multiplayer

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

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

Age of Empires II (Retired)
Shared: Strategy · Multiplayer · Base Building

Heroes of the Three Kingdoms 7
Shared: Strategy · Military · 2D

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

Company of Heroes 2
Shared: Strategy · Multiplayer · Military

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

Turmoil
Shared: Strategy · Turn-Based Strategy · Multiplayer

WARNO
Shared: Wargame · Strategy · Military

Mindustry
Shared: Base Building · Strategy · Multiplayer

Might & Magic: Heroes VI
Shared: Turn-Based Strategy · Strategy · Multiplayer

Tempest Rising
Shared: Strategy · Base Building · Multiplayer

Oxygen Not Included
Shared: Base Building · 2D · Strategy

Worms W.M.D
Shared: Strategy · Turn-Based Strategy · Multiplayer

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

Halo Wars: Definitive Edition
Shared: Strategy · Base Building · Multiplayer

The Last Spell
Shared: Turn-Based Strategy · Strategy · Turn-Based Combat