Games like Strategy & Tactics: Dark Ages
Games like Strategy & Tactics: Dark Ages include Crusader Kings II, Crusader Kings III, Hearts of Iron IV, Europa Universalis IV, and Mount & Blade II: Bannerlord. We matched them by the tags players give Strategy & Tactics: Dark Ages on Steam (Medieval, Strategy, Simulation, RPG, and Board Game): closest matches first, and among equally close ones the better-known games.

Crusader Kings II
Shared: Strategy · Medieval · Simulation

Crusader Kings III
Shared: Medieval · Strategy · Simulation

Hearts of Iron IV
Shared: Strategy · Historical · Simulation

Europa Universalis IV
Shared: Strategy · Simulation · Historical

Mount & Blade II: Bannerlord
Shared: Medieval · Strategy · RPG

Age of History II
Shared: Strategy · Historical · Simulation

Total War: MEDIEVAL II – Definitive Edition
Shared: Medieval · Strategy · Historical

Heroes of Might and Magic: Olden Era
Shared: Strategy · RPG · Simulation

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

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

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

Europa Universalis V
Shared: Strategy · Simulation · Historical

Total War: WARHAMMER
Shared: Strategy · RPG · Simulation

Mount & Blade: Warband
Shared: Medieval · Strategy · RPG

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

Terra Invicta
Shared: Strategy · Simulation · Grand Strategy

Victoria 3
Shared: Strategy · Simulation · Grand Strategy

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

A Total War Saga: THRONES OF BRITANNIA
Shared: Strategy · Medieval · Historical

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

Victoria II
Shared: Strategy · Simulation · Historical

Knights of Honor II: Sovereign
Shared: Strategy · Medieval · Simulation

Old World
Shared: Strategy · Simulation · Historical

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