Games like Gazillionaire
Games like Gazillionaire include Game Dev Tycoon, Plague Inc: Evolved, 911 Operator, Mini Motorways, and Startup Company. We matched them by the tags players give Gazillionaire on Steam (Casual, Strategy, Indie, Simulation, and Economy): closest matches first, and among equally close ones the better-known games.

Game Dev Tycoon
Shared: Indie · Strategy · Simulation

Plague Inc: Evolved
Shared: Strategy · Simulation · Indie

911 Operator
Shared: Strategy · Simulation · Indie

Mini Motorways
Shared: Strategy · Casual · Simulation

Startup Company
Shared: Strategy · Simulation · Casual

Democracy 3
Shared: Strategy · Simulation · Indie

House Flipper
Shared: Simulation · Casual · Strategy

Two Point Museum
Shared: Casual · Simulation · Strategy

Cookie Clicker
Shared: Casual · Indie · Economy

Kerbal Space Program
Shared: Simulation · Space · Indie

BidKing
Shared: Casual · Strategy · Simulation

Cities: Skylines
Shared: Simulation · Strategy · Economy

Gas Station Simulator
Shared: Simulation · Economy · Casual

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

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

Mini Metro
Shared: Strategy · Simulation · Indie

Game Corp DX
Shared: Simulation · Indie · Economy

Chinese Parents
Shared: Casual · Simulation · Indie

Papers, Please
Shared: Indie · Simulation · Retro

Democracy 4
Shared: Strategy · Simulation · Economy

Transport Fever 2
Shared: Strategy · Simulation · Economy

Mountain
Shared: Casual · Indie · Simulation

Train Fever
Shared: Simulation · Strategy · Indie

Barn Finders
Shared: Casual · Simulation · Indie