Games like Clicker Planet
Games like Clicker Planet include Factorio, Cities: Skylines, Prison Architect, Hearth and Hamlet, and Oxygen Not Included. We matched them by the tags players give Clicker Planet on Steam (City Builder, Casual, Incremental, Base Building, and Building): closest matches first, and among equally close ones the better-known games.

Factorio
Shared: Base Building · Management · Building

Cities: Skylines
Shared: City Builder · Building · Management

Prison Architect
Shared: Building · Base Building · City Builder

Hearth and Hamlet
Shared: City Builder · Incremental · Casual

Oxygen Not Included
Shared: Base Building · Building · Management

Mini Motorways
Shared: Casual · Management · Puzzle

Cookie Clicker
Shared: Incremental · Casual · Management

SimAirport
Shared: City Builder · Casual · Management

shapez
Shared: Base Building · Management · Building

ISLANDERS
Shared: City Builder · Building · Puzzle

Shelldiver
Shared: Casual · Incremental · Management

Kingdoms and Castles
Shared: City Builder · Management · Building

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

Manor Lords
Shared: City Builder · Base Building · Management

Kingdom Two Crowns
Shared: City Builder · Base Building · Building

Frostpunk
Shared: City Builder · Building · Base Building

Dyson Sphere Program
Shared: Base Building · Building · City Builder

Digseum
Shared: Casual · Incremental · Management

Against the Storm
Shared: City Builder · Base Building · Building

Dwarf Fortress
Shared: Base Building · City Builder · Management

Ratopia
Shared: Building · Base Building · City Builder

Project Highrise
Shared: Management · Building · Casual

SimCity™ 4 Deluxe Edition
Shared: City Builder · Base Building · Building

Dorfromantik
Shared: City Builder · Casual · Puzzle