Games like Interstellar Espionage Inc.
Games like Interstellar Espionage Inc. include Dyson Sphere Program, Big Ambitions, Cities: Skylines, Supermarket Simulator, and Kingdoms and Castles. We matched them by the tags players give Interstellar Espionage Inc. on Steam (Management, Espionage, Resource Management, Economy, and Roguelike): closest matches first, and among equally close ones the better-known games.

Dyson Sphere Program
Shared: Resource Management · Management · Space

Big Ambitions
Shared: Management · Economy · Resource Management

Cities: Skylines
Shared: Management · Strategy · Economy

Supermarket Simulator
Shared: Management · Economy · Simulation

Kingdoms and Castles
Shared: Management · Resource Management · Strategy

FTL: Faster Than Light
Shared: Roguelike · Strategy · Space

Victoria 3
Shared: Economy · Strategy · Management

Jurassic World Evolution
Shared: Management · Strategy · Economy

Jurassic World Evolution 2
Shared: Management · Economy · Resource Management

Transport Fever 2
Shared: Management · Strategy · Economy

X4: Foundations
Shared: Space Sim · Simulation · Space

Manor Lords
Shared: Management · Strategy · Resource Management

Dwarf Fortress
Shared: Management · Strategy · Simulation

Foundation
Shared: Management · Resource Management · Strategy

Prehistoric Kingdom
Shared: Management · Economy · Resource Management

Oxygen Not Included
Shared: Resource Management · Management · Strategy

Rise of Industry
Shared: Management · Economy · Resource Management

Game Dev Tycoon
Shared: Management · Economy · Strategy

Cities: Skylines II
Shared: Management · Economy · Simulation

Airport CEO
Shared: Management · Resource Management · Simulation

Anno 1800
Shared: Economy · Resource Management · Strategy

Startup Company
Shared: Management · Economy · Strategy

Mad Games Tycoon
Shared: Management · Economy · Strategy

Production Line : Car factory simulation
Shared: Management · Economy · Resource Management