Games like Millennia: Atomic Ambitions
Games like Millennia: Atomic Ambitions include Sid Meier’s Civilization® VI, Sid Meier's Civilization® V, Europa Universalis IV, Sid Meier's Civilization VII, and Hearts of Iron IV. We matched them by the tags players give Millennia: Atomic Ambitions on Steam (Strategy, Simulation, 4X, Turn-Based Strategy, and Grand Strategy): closest matches first, and among equally close ones the better-known games.

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

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

Europa Universalis IV
Shared: Strategy · Simulation · Grand Strategy

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

Hearts of Iron IV
Shared: Strategy · Grand Strategy · Simulation

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

Terra Invicta
Shared: Strategy · Simulation · 4X

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

Millennia
Shared: Strategy · 4X · Turn-Based Strategy

Old World
Shared: Strategy · Simulation · 4X

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

ENDLESS Legend™ 2
Shared: Strategy · Simulation · 4X

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

Rebel Inc: Escalation
Shared: Strategy · Simulation · 4X

Europa Universalis V
Shared: Strategy · Simulation · Grand Strategy

Total War: ROME II - Emperor Edition
Shared: Strategy · Turn-Based Strategy · Grand Strategy

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

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

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

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

Victoria 3
Shared: Strategy · Simulation · Grand Strategy

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

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

Total War: ATTILA
Shared: Strategy · Turn-Based Strategy · Grand Strategy