Games like Factory Town Idle
Games like Factory Town Idle include Cookie Clicker, Kingdoms and Castles, Shelldiver, Scritchy Scratchy, and Digseum. We matched them by the tags players give Factory Town Idle on Steam (Idler, Incremental, Resource Management, City Builder, and Automation): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Incremental · Management

Kingdoms and Castles
Shared: City Builder · Resource Management · Management

Shelldiver
Shared: Incremental · Resource Management · Idler

Scritchy Scratchy
Shared: Incremental · Idler · Resource Management

Digseum
Shared: Incremental · Idler · Management

Cities: Skylines
Shared: City Builder · Management · Resource Management

Fortune Mill
Shared: Idler · Incremental · Automation

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

Captain of Industry
Shared: Resource Management · Automation · Management

Gamblers Table
Shared: Incremental · Automation · Management

Hearth and Hamlet
Shared: Incremental · City Builder · Idler

Prison Architect
Shared: City Builder · Management · Colony Sim

Keep on Mining!
Shared: Idler · Incremental · Resource Management

Cities: Skylines II
Shared: City Builder · Management · Economy

Factorio
Shared: Resource Management · Automation · Management

Tower Wizard
Shared: Idler · Incremental · Resource Management

Rusty's Retirement
Shared: Idler · Automation · Management

Foundation
Shared: City Builder · Resource Management · Management

Banished
Shared: City Builder · Colony Sim · Resource Management

Frostpunk
Shared: City Builder · Resource Management · Colony Sim

Factory Town
Shared: Resource Management · Automation · City Builder

Nodebuster
Shared: Incremental · Idler · Management

Fracture Field
Shared: Idler · Incremental · Resource Management

Oxygen Not Included
Shared: Resource Management · Colony Sim · Management