Games like NationWar:Annals
Games like NationWar:Annals include Europa Universalis IV, Hearts of Iron IV, Total War: ROME REMASTERED, Total War: THREE KINGDOMS, and Sid Meier's Civilization VII. We matched them by the tags players give NationWar:Annals on Steam (Strategy, RTS, Diplomacy, 4X, and Real Time Tactics): closest matches first, and among equally close ones the better-known games.

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

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

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

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

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

Terra Invicta
Shared: Strategy · 4X · Grand Strategy

WARNO
Shared: RTS · Strategy · Real Time Tactics

Ultimate General: Civil War
Shared: Real Time Tactics · RTS · Strategy

Broken Arrow
Shared: Strategy · RTS · Wargame

Total War: NAPOLEON – Definitive Edition
Shared: Strategy · RTS · Grand Strategy

Age of History 3
Shared: Strategy · RTS · Wargame

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

Total War: EMPIRE – Definitive Edition
Shared: Strategy · Grand Strategy · RTS

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

Wargame: Red Dragon
Shared: Strategy · RTS · Wargame

Europa Universalis V
Shared: Strategy · Grand Strategy · Diplomacy

Total War: MEDIEVAL II – Definitive Edition
Shared: Strategy · RTS · Grand Strategy

Total War: WARHAMMER
Shared: Strategy · 4X · RTS

Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · 4X

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

Dune: Spice Wars
Shared: RTS · Strategy · 4X

World Warfare & Economics
Shared: RTS · Strategy · Grand Strategy

Total War: ATTILA
Shared: Strategy · RTS · Grand Strategy

Master of Command
Shared: Strategy · RTS · Real Time Tactics