Games like Skirmish Game Simulator
Games like Skirmish Game Simulator include Tabletop Simulator, Root, Mount & Blade II: Bannerlord, Totally Accurate Battle Simulator, and Sid Meier’s Civilization® VI. We matched them by the tags players give Skirmish Game Simulator on Steam (Simulation, Sandbox, Tabletop, Multiplayer, and Wargame): closest matches first, and among equally close ones the better-known games.

Tabletop Simulator
Shared: Simulation · Tabletop · Sandbox

Root
Shared: Tabletop · Wargame · Board Game

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

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Strategy

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

CarX Drift Racing Online
Shared: Simulation · Sandbox · Multiplayer

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

Prison Architect
Shared: Simulation · Sandbox · Strategy

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

Twilight Struggle
Shared: Tabletop · Simulation · Strategy

The Escapists 2
Shared: Multiplayer · Strategy · Simulation

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

Besiege
Shared: Simulation · Sandbox · Multiplayer

Crusader Kings III
Shared: Simulation · Strategy · Sandbox

Anno 1800
Shared: Simulation · Sandbox · Multiplayer

Garry's Mod
Shared: Sandbox · Multiplayer · Simulation

Terraria
Shared: Sandbox · Multiplayer · 2D

Plague Inc: Evolved
Shared: Simulation · Strategy · Multiplayer

Europa Universalis IV
Shared: Simulation · Strategy · Wargame

Gremlins, Inc.
Shared: Tabletop · Multiplayer · Board Game

Axis and Allies 1942 Online
Shared: Wargame · Tabletop · Turn-Based Strategy

Armello
Shared: PvP · Turn-Based Strategy · Board Game

Space Engineers
Shared: Sandbox · Simulation · Multiplayer

Arma 3
Shared: Simulation · Multiplayer · Sandbox