Games like Idle Skilling
Games like Idle Skilling include IdleOn - The Incremental MMO, Cookie Clicker, Cell to Singularity - Evolution Never Ends, Shelldiver, and Scritchy Scratchy. We matched them by the tags players give Idle Skilling on Steam (Free to Play, Idler, Simulation, Incremental, and PvE): closest matches first, and among equally close ones the better-known games.

IdleOn - The Incremental MMO
Shared: Free to Play · Idler · Incremental

Cookie Clicker
Shared: Idler · Incremental · Pixel Graphics

Cell to Singularity - Evolution Never Ends
Shared: Free to Play · Incremental · Simulation

Shelldiver
Shared: Incremental · Idler · Resource Management

Scritchy Scratchy
Shared: Idler · Incremental · Resource Management

Digseum
Shared: Idler · Incremental · Simulation

Potion Craft: Alchemist Simulator
Shared: Simulation · Singleplayer · Resource Management

Idle Champions of the Forgotten Realms
Shared: Free to Play · Idler · Incremental

Fortune Mill
Shared: Idler · Incremental · Simulation

Stardew Valley
Shared: Simulation · Pixel Graphics · Relaxing

Click the Button
Shared: Idler · Incremental · Simulation

Nodebuster
Shared: Incremental · Idler · Simulation

Click and Conquer
Shared: Incremental · Simulation · Idler

The Sims™ 4
Shared: Free to Play · Simulation · Singleplayer

DAVE THE DIVER
Shared: Pixel Graphics · Casual · Simulation

Horripilant
Shared: Idler · Incremental · Pixel Graphics

Graveyard Keeper
Shared: Simulation · Pixel Graphics · Crafting

Swag and Sorcery
Shared: Incremental · Pixel Graphics · Singleplayer

Click Mage
Shared: Simulation · Incremental · Resource Management

Lyca
Shared: Idler · Incremental · Simulation

Dragon Cliff
Shared: Idler · Incremental · Pixel Graphics

Tiny Pasture
Shared: Idler · Incremental · Pixel Graphics

Tower Wizard
Shared: Idler · Incremental · Resource Management

A Game About Feeding A Black Hole
Shared: Incremental · Idler · Simulation