Games like Simulator of Countries
Games like Simulator of Countries include Europa Universalis IV, Victoria II, Hearts of Iron IV, Victoria 3, and Age of History 3. We matched them by the tags players give Simulator of Countries on Steam (Wargame, Strategy, Political Sim, Military, and Simulation): closest matches first, and among equally close ones the better-known games.

Europa Universalis IV
Shared: Strategy · Wargame · Simulation

Victoria II
Shared: Strategy · Political Sim · Grand Strategy

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

Victoria 3
Shared: Strategy · Simulation · Political Sim

Age of History 3
Shared: Wargame · Strategy · RTS

Wargame: Red Dragon
Shared: Strategy · Wargame · Military

Europa Universalis V
Shared: Strategy · Wargame · Simulation

Imperator: Rome
Shared: Strategy · Simulation · Political Sim

Dummynation
Shared: Strategy · Military · Simulation

Steel Division 2
Shared: Strategy · Military · RTS

Sid Meier's Civilization VII
Shared: Strategy · Grand Strategy · Military

SuperPower 2 Steam Edition
Shared: Strategy · Political Sim · Simulation

Crusader Kings II
Shared: Strategy · Political Sim · Grand Strategy

WARNO
Shared: Wargame · Military · Strategy

Age of History II
Shared: Strategy · Political Sim · Grand Strategy

Wargame: European Escalation
Shared: Strategy · Wargame · Military

Company of Heroes 3
Shared: Strategy · Wargame · RTS

Power & Revolution 2020 Edition
Shared: Strategy · Simulation · Wargame

Supreme Ruler Ultimate
Shared: Military · Wargame · Grand Strategy

Democracy 4
Shared: Strategy · Political Sim · Simulation

Total War: THREE KINGDOMS
Shared: Strategy · Military · RTS

Crusader Kings III
Shared: Strategy · Simulation · Grand Strategy

Terra Invicta
Shared: Strategy · Simulation · Grand Strategy

Wargame: Airland Battle
Shared: Strategy · Wargame · Military