Games like Code Blue Idle
Games like Code Blue Idle include Shelldiver, Cookie Clicker, Nodebuster, Game Dev Tycoon, and Chef Knight. We matched them by the tags players give Code Blue Idle on Steam (Idler, Management, Strategy, Resource Management, and Simulation): closest matches first, and among equally close ones the better-known games.

Shelldiver
Shared: Management · Resource Management · Idler

Cookie Clicker
Shared: Idler · Management · Incremental

Nodebuster
Shared: Idler · Strategy · Casual

Game Dev Tycoon
Shared: Management · Strategy · Simulation

Chef Knight
Shared: Strategy · Simulation · Management

A Game About Feeding A Black Hole
Shared: Strategy · Idler · Casual

Cities: Skylines
Shared: Management · Simulation · Strategy

Mini Motorways
Shared: Strategy · Management · Simulation

Bills Must Be Paid
Shared: Strategy · Idler · Incremental

Two Point Hospital
Shared: Management · Simulation · Medical Sim

Digseum
Shared: Idler · Management · Casual

Potion Craft: Alchemist Simulator
Shared: Management · Simulation · Relaxing

Tavern Master
Shared: Management · Simulation · Resource Management

Keep on Mining!
Shared: Idler · Incremental · Casual

Scritchy Scratchy
Shared: Idler · Resource Management · Incremental

Cities: Skylines II
Shared: Management · Simulation · Strategy

Loot Loop
Shared: Idler · Management · Simulation

911 Operator
Shared: Management · Strategy · Simulation

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

Incredicer
Shared: Idler · Strategy · Incremental

Lyca
Shared: Idler · Management · Casual

Idle Champions of the Forgotten Realms
Shared: Idler · Strategy · Management

Foundation
Shared: Strategy · Simulation · Management

Dragon Cliff
Shared: Idler · Strategy · Management