Games like Holdfast: Nations At War - High Command
Games like Holdfast: Nations At War - High Command include Hell Let Loose: Vietnam, Total Tank Simulator, BidKing, Totally Accurate Battle Simulator, and Plague Inc: Evolved. We matched them by the tags players give Holdfast: Nations At War - High Command on Steam (Strategy, Massively Multiplayer, Simulation, Indie, and Action): closest matches first, and among equally close ones the better-known games.

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

Total Tank Simulator
Shared: Strategy · Simulation · Action

BidKing
Shared: Strategy · Simulation · Massively Multiplayer

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Plague Inc: Evolved
Shared: Strategy · Simulation · Indie

SMITE®
Shared: Strategy · Action · Simulation

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

Door Kickers
Shared: Strategy · Simulation · Action

House Flipper
Shared: Simulation · Strategy · Massively Multiplayer

Squad 44
Shared: Simulation · Massively Multiplayer · Strategy

The Escapists
Shared: Strategy · Simulation · Indie

Game Dev Tycoon
Shared: Simulation · Strategy · Indie

Notes of Soul
Shared: Massively Multiplayer · Action · Indie

Shieldwall
Shared: Simulation · Strategy · Action

OMON Simulator
Shared: Simulation · Indie · Action

Ultimate Epic Battle Simulator
Shared: Simulation · Strategy · Action

Your Only Move Is HUSTLE
Shared: Strategy · Action · Simulation

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

Police Stories
Shared: Strategy · Action · Simulation

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

Drug Dealer Simulator
Shared: Simulation · Indie · Action

Isonzo
Shared: Simulation · Indie · Massively Multiplayer

War Thunder
Shared: Simulation · Action · Massively Multiplayer

Mini Motorways
Shared: Strategy · Simulation · Indie