Games like I Am Caligula
Games like I Am Caligula include Crusader Kings III, Mount & Blade II: Bannerlord, Crusader Kings II, The Scroll of Taiwu : Beyond The Dome, and Heroes' Vow: Three Kingdoms. We matched them by the tags players give I Am Caligula on Steam (Indie, Strategy, RPG, Simulation, and Historical): closest matches first, and among equally close ones the better-known games.

Crusader Kings III
Shared: Strategy · Simulation · RPG

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

Crusader Kings II
Shared: Strategy · Historical · Simulation

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

Heroes' Vow: Three Kingdoms
Shared: Strategy · Simulation · RPG

Plague Inc: Evolved
Shared: Strategy · Indie · Simulation

Home Behind 2
Shared: Strategy · RPG · Indie

觅长生
Shared: RPG · Strategy · Indie

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Amazing Cultivation Simulator
Shared: Simulation · RPG · Strategy

Age of History II
Shared: Strategy · Historical · Simulation

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

Sultan's Game
Shared: RPG · Strategy · Simulation

Europa Universalis IV
Shared: Strategy · Simulation · Historical

Game Dev Tycoon
Shared: Indie · Strategy · Simulation

Nantucket
Shared: Indie · Strategy · RPG

Oriental Empires
Shared: Strategy · Indie · Simulation

Hearts of Iron IV
Shared: Strategy · Historical · Simulation

Retirement Simulator
Shared: Indie · RPG · Simulation

Manor Lords
Shared: Strategy · Simulation · Historical

Plebby Quest: The Crusades
Shared: Strategy · Indie · RPG

Battle Brothers
Shared: Strategy · RPG · Historical

Sid Meier’s Civilization® VI
Shared: Strategy · Historical · Simulation

Home Behind
Shared: RPG · Indie · Strategy