Games like Onslaught: Armoured Assault
Games like Onslaught: Armoured Assault include Plague Inc: Evolved, Game Dev Tycoon, Totally Accurate Battle Simulator, Mini Motorways, and Banished. We matched them by the tags players give Onslaught: Armoured Assault on Steam (Indie, Strategy, and Simulation): closest matches first, and among equally close ones the better-known games.

Plague Inc: Evolved
Shared: Strategy · Simulation · Indie

Game Dev Tycoon
Shared: Indie · Simulation · Strategy

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Mini Motorways
Shared: Strategy · Simulation · Indie

Banished
Shared: Strategy · Simulation · Indie

911 Operator
Shared: Strategy · Simulation · Indie

Papers, Please
Shared: Indie · Simulation · Strategy

Mini Metro
Shared: Strategy · Simulation · Indie

Total Tank Simulator
Shared: Strategy · Simulation · Indie

Dictators:No Peace Countryballs
Shared: Strategy · Simulation · Indie

Democracy 3
Shared: Strategy · Simulation · Indie

FTL: Faster Than Light
Shared: Strategy · Indie · Simulation

Two Point Hospital
Shared: Simulation · Strategy · Indie

Reus
Shared: Strategy · Indie · Simulation

The Escapists
Shared: Strategy · Indie · Simulation

Door Kickers
Shared: Strategy · Simulation · Indie

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

BidKing
Shared: Strategy · Simulation · Indie

Tavern Master
Shared: Simulation · Strategy · Indie

Bomber Crew
Shared: Simulation · Strategy · Indie

Startup Company
Shared: Simulation · Strategy · Indie

Animal Revolt Battle Simulator
Shared: Indie · Simulation · Strategy

Home Behind 2
Shared: Strategy · Indie · Simulation

Oriental Empires
Shared: Strategy · Indie · Simulation