Games like SUPREMACY: WORLD WAR 3
Games like SUPREMACY: WORLD WAR 3 include Europa Universalis IV, Age of History 3, Hearts of Iron IV, Crusader Kings II, and Europa Universalis V. We matched them by the tags players give SUPREMACY: WORLD WAR 3 on Steam (Strategy, Free to Play, Wargame, Grand Strategy, and Massively Multiplayer): closest matches first, and among equally close ones the better-known games.

Europa Universalis IV
Shared: Strategy · Grand Strategy · Simulation

Age of History 3
Shared: Strategy · Wargame · Grand Strategy

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

Crusader Kings II
Shared: Strategy · Grand Strategy · Simulation

Europa Universalis V
Shared: Strategy · Grand Strategy · Simulation

Ultimate Epic Battle Simulator 2
Shared: Strategy · Simulation · Wargame

SMITE®
Shared: Free to Play · Strategy · Action

Game of Thrones Winter is Coming
Shared: Free to Play · Strategy · Massively Multiplayer

Once Human
Shared: Free to Play · Strategy · Action

War Thunder
Shared: Free to Play · Simulation · Action

Manor Lords
Shared: Strategy · Grand Strategy · Simulation

Wargame: Red Dragon
Shared: Strategy · Wargame · RTS

Total War: ROME REMASTERED
Shared: Strategy · Grand Strategy · Wargame

Total War: WARHAMMER
Shared: Strategy · Grand Strategy · Simulation

Foxhole
Shared: Wargame · Massively Multiplayer · Strategy

Total War: WARHAMMER II
Shared: Strategy · Grand Strategy · RTS

Medieval Kingdom Wars
Shared: Grand Strategy · Strategy · RTS

Victoria 3
Shared: Strategy · Grand Strategy · Simulation

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

Age of History II
Shared: Strategy · Grand Strategy · Simulation

Steel Division 2
Shared: Strategy · RTS · Simulation

Where Winds Meet
Shared: Free to Play · Strategy · Massively Multiplayer