Games like Idle Tiers
Games like Idle Tiers include Cookie Clicker, Scritchy Scratchy, Digseum, Fortune Mill, and Supermarket Simulator. We matched them by the tags players give Idle Tiers on Steam (Simulation, Idler, Incremental, Sandbox, and Immersive Sim): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Incremental · Economy

Scritchy Scratchy
Shared: Incremental · Idler · Simulation

Digseum
Shared: Incremental · Idler · Simulation

Fortune Mill
Shared: Idler · Incremental · Simulation

Supermarket Simulator
Shared: Simulation · Economy · Management

Big Ambitions
Shared: Simulation · Economy · Management

Shelldiver
Shared: Incremental · Idler · Simulation

Nodebuster
Shared: Incremental · Idler · Simulation

Waterpark Simulator
Shared: Simulation · Sandbox · Management

Gamblers Table
Shared: Incremental · Idler · Management

Click the Button
Shared: Incremental · Idler · Simulation

Cities: Skylines
Shared: Simulation · Sandbox · Management

Cities: Skylines II
Shared: Simulation · Sandbox · Economy

(the) Gnorp Apologue
Shared: Idler · Incremental · Economy

Bills Must Be Paid
Shared: Incremental · Idler · Capitalism

Tiny Pasture
Shared: Idler · Incremental · Simulation

Planet Coaster
Shared: Simulation · Sandbox · Management

Click and Conquer
Shared: Simulation · Incremental · Idler

Keep on Mining!
Shared: Idler · Incremental · Relaxing

Planet Zoo
Shared: Simulation · Sandbox · Management

Foundation
Shared: Simulation · Sandbox · Management

Mall Simulator
Shared: Simulation · Economy · Immersive Sim

PC Building Simulator
Shared: Simulation · Immersive Sim · Sandbox

Prison Architect
Shared: Simulation · Sandbox · Management