Games like SanGuos3
Games like SanGuos3 include ROMANCE OF THE THREE KINGDOMS XIV, Battle Brothers, XCOM 2, Romance of the Three Kingdoms XIII, and Romance of the Three Kingdoms XI with Power Up Kit. We matched them by the tags players give SanGuos3 on Steam (Turn-Based Tactics, Wargame, Sandbox, Military, and War): closest matches first, and among equally close ones the better-known games.

ROMANCE OF THE THREE KINGDOMS XIV
Shared: Turn-Based Tactics · Wargame · Military

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

XCOM 2
Shared: Turn-Based Tactics · Strategy · Character Customization

Romance of the Three Kingdoms XIII
Shared: Turn-Based Tactics · Wargame · Military

Romance of the Three Kingdoms XI with Power Up Kit
Shared: Turn-Based Tactics · Wargame · Military

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

MENACE
Shared: Turn-Based Tactics · Turn-Based Strategy · Strategy

Hearts of Iron IV
Shared: War · Strategy · Military

ROMANCE OF THE THREE KINGDOMS 8 REMAKE
Shared: Turn-Based Tactics · Wargame · Military

Xenonauts 2
Shared: Turn-Based Tactics · Turn-Based Strategy · Strategy

WARNO
Shared: Wargame · Military · War

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

Europa Universalis IV
Shared: Wargame · Strategy · Military

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

Foxhole
Shared: Wargame · Military · Sandbox

Total War: EMPIRE – Definitive Edition
Shared: Military · Strategy · War

Totally Accurate Battle Simulator
Shared: Sandbox · War · Strategy

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

Sid Meier's Civilization VII
Shared: Military · Strategy · Turn-Based Tactics

Panzer Corps 2
Shared: Military · Turn-Based Strategy · Wargame

Heroes of the Three Kingdoms 7
Shared: Military · Turn-Based Tactics · Strategy

Mount & Blade II: Bannerlord
Shared: War · Sandbox · Strategy

STAR WARS Zero Company™
Shared: Turn-Based Tactics · Turn-Based Strategy · Strategy

Your Only Move Is HUSTLE
Shared: Turn-Based Strategy · Turn-Based Tactics · Strategy