Games like Idle High
Games like Idle High include Cookie Clicker, Digseum, Tiny Pasture, Click the Button, and Shelldiver. We matched them by the tags players give Idle High on Steam (Casual, Farming Sim, Point & Click, Incremental, and Idler): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Casual · Incremental · Idler

Digseum
Shared: Casual · Incremental · Idler

Tiny Pasture
Shared: Farming Sim · Idler · Casual

Click the Button
Shared: Casual · Incremental · Idler

Shelldiver
Shared: Casual · Incremental · Idler

Fortune Mill
Shared: Incremental · Idler · Casual

Rusty's Retirement
Shared: Farming Sim · Idler · Automation

Plantera
Shared: Incremental · Idler · Farming Sim

Stardew Valley
Shared: Farming Sim · Pixel Graphics · Casual

Nodebuster
Shared: Casual · Incremental · Idler

Keep on Mining!
Shared: Casual · Incremental · Idler

Touhou Mystia's Izakaya
Shared: Casual · Pixel Graphics · Time Management

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Farming Sim

Horripilant
Shared: Incremental · Casual · Idler

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

Fracture Field
Shared: Incremental · Idler · Casual

To The Core
Shared: Casual · Incremental · 2D

Poop Clicker
Shared: Casual · Point & Click · Farming Sim

Alice's Gaze
Shared: Casual · Incremental · Idler

Melvor Idle
Shared: Casual · Idler · 2D

Click and Conquer
Shared: Casual · Incremental · Idler

Incredicer
Shared: Casual · Incremental · Idler

Your Big, Cute Monster Farm
Shared: Casual · Farming Sim · Idler

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