Games like Marco Polo
Games like Marco Polo include Totally Accurate Battle Simulator, Mount & Blade II: Bannerlord, SPORE™ Galactic Adventures, Ultimate Epic Battle Simulator 2, and Shieldwall. We matched them by the tags players give Marco Polo on Steam (Simulation, Strategy, Action, Adventure, and FMV): closest matches first, and among equally close ones the better-known games.

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Adventure

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

SPORE™ Galactic Adventures
Shared: Simulation · Action · Adventure

Ultimate Epic Battle Simulator 2
Shared: Simulation · Strategy · Action

Shieldwall
Shared: Simulation · Action · Strategy

Planet Coaster
Shared: Simulation · Strategy · Action

Men of War: Assault Squad 2
Shared: Strategy · Simulation · Action

The Escapists
Shared: Strategy · Simulation · Action

Hell Let Loose: Vietnam
Shared: Simulation · Action · Strategy

Space Rangers HD: A War Apart
Shared: Strategy · Simulation · Adventure

Mount & Blade: Warband
Shared: Strategy · Action · Adventure

Ultimate Epic Battle Simulator
Shared: Simulation · Strategy · Action

Total Tank Simulator
Shared: Simulation · Strategy · Action

Arma 3
Shared: Action · Simulation · Strategy

Arma Reforger
Shared: Simulation · Action · Strategy

Arma 2: Operation Arrowhead
Shared: Simulation · Action · Strategy

Carrier Command 2
Shared: Simulation · Strategy · Adventure

OMON Simulator
Shared: Simulation · Action · Adventure

Plebby Quest: The Crusades
Shared: Strategy · Simulation · Adventure

We Who Are About To Die
Shared: Action · Strategy · Simulation

SMITE®
Shared: Action · Strategy · Simulation

Drug Dealer Simulator
Shared: Simulation · Action · Adventure

Police Stories
Shared: Strategy · Action · Simulation

[Chillas Art] The Closing Shift
Shared: Simulation · Adventure · Action