Games like OIL.EXE
Games like OIL.EXE include Victoria 3, Supermarket Simulator, Scritchy Scratchy, Cities: Skylines, and Cookie Clicker. We matched them by the tags players give OIL.EXE on Steam (Text-Based, Management, Capitalism, Strategy, and Simulation): closest matches first, and among equally close ones the better-known games.

Victoria 3
Shared: Strategy · Simulation · Economy

Supermarket Simulator
Shared: Management · Simulation · Economy

Scritchy Scratchy
Shared: Management · Resource Management · Simulation

Cities: Skylines
Shared: Management · Simulation · Strategy

Cookie Clicker
Shared: Management · Idler · Incremental

Mad Games Tycoon 2
Shared: Management · Simulation · Economy

Rise of Industry
Shared: Management · Strategy · Simulation

Turmoil
Shared: Management · Strategy · Resource Management

TCG Card Shop Simulator
Shared: Management · Simulation · Economy

Big Ambitions
Shared: Management · Capitalism · Simulation

Mad Games Tycoon
Shared: Management · Strategy · Simulation

Game Dev Tycoon
Shared: Management · Simulation · Strategy

Bills Must Be Paid
Shared: Capitalism · Strategy · Management

Democracy 4
Shared: Management · Strategy · Simulation

Transport Fever 2
Shared: Management · Strategy · Simulation

Startup Company
Shared: Management · Simulation · Strategy

(the) Gnorp Apologue
Shared: Strategy · Management · Economy

Kingdoms and Castles
Shared: Management · Simulation · Strategy

Manor Lords
Shared: Strategy · Simulation · Management

Mall Simulator
Shared: Management · Simulation · Capitalism

GearCity
Shared: Management · Strategy · Simulation

Gamblers Table
Shared: Management · Capitalism · Incremental

Foundation
Shared: Simulation · Strategy · Management

Prison Architect
Shared: Simulation · Management · Strategy