Games like War Theatre
Games like War Theatre include Mount & Blade II: Bannerlord, Mount & Blade: Warband, Crusader Kings III, XCOM 2, and Battle Brothers. We matched them by the tags players give War Theatre on Steam (RPG and Strategy): closest matches first, and among equally close ones the better-known games.

Mount & Blade II: Bannerlord
Shared: Strategy · RPG

Mount & Blade: Warband
Shared: RPG · Strategy

Crusader Kings III
Shared: Strategy · RPG

XCOM 2
Shared: Strategy · RPG

Battle Brothers
Shared: RPG · Strategy

9 Kings
Shared: RPG · Strategy

Stoneshard
Shared: RPG · Strategy

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

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Strategy

Total War: WARHAMMER
Shared: RPG · Strategy

觅长生
Shared: RPG · Strategy

For The King
Shared: RPG · Strategy

Baldur's Gate 3
Shared: RPG · Strategy

Sands of Salzaar
Shared: RPG · Strategy

Crusader Kings II
Shared: Strategy · RPG

MENACE
Shared: RPG · Strategy

GWENT: The Witcher Card Game
Shared: Strategy · RPG

Warhammer 40,000: Rogue Trader
Shared: RPG · Strategy

Sultan's Game
Shared: RPG · Strategy

Hero's Adventure: Road to Passion
Shared: RPG · Strategy

The Last Spell
Shared: Strategy · RPG

Town of Salem
Shared: Strategy · RPG

For The King II
Shared: RPG · Strategy

Dragon Cliff
Shared: RPG · Strategy