Games like Planet Escape Idle
Games like Planet Escape Idle include Oxygen Not Included, Cookie Clicker, (the) Gnorp Apologue, Shelldiver, and Factorio. We matched them by the tags players give Planet Escape Idle on Steam (Idler, Incremental, Simulation, Building, and Crafting): closest matches first, and among equally close ones the better-known games.

Oxygen Not Included
Shared: Building · Management · Resource Management

Cookie Clicker
Shared: Idler · Incremental · Management

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

Shelldiver
Shared: Incremental · Idler · Management

Factorio
Shared: Crafting · Resource Management · Strategy

Kingdoms and Castles
Shared: Simulation · Management · Building

Nodebuster
Shared: Incremental · Idler · Simulation

Cities: Skylines
Shared: Simulation · Building · Management

Prison Architect
Shared: Simulation · Building · Management

Frostpunk
Shared: Strategy · Building · Resource Management

Tavern Master
Shared: Simulation · Building · Management

Tower Wizard
Shared: Idler · Incremental · Strategy

Against the Storm
Shared: Simulation · Strategy · Building

Manor Lords
Shared: Simulation · Strategy · Building

Dwarf Fortress
Shared: Simulation · Strategy · Building

Space Haven
Shared: Simulation · Strategy · Management

Chef Knight
Shared: Incremental · Simulation · Strategy

Banished
Shared: Simulation · Strategy · Survival

Stranded: Alien Dawn
Shared: Simulation · Crafting · Strategy

RimWorld
Shared: Strategy · Management · Simulation

Dyson Sphere Program
Shared: Building · Simulation · Resource Management

Startup Company
Shared: Simulation · Management · Strategy

Digseum
Shared: Incremental · Idler · Simulation

Jurassic World Evolution
Shared: Building · Simulation · Management