Games like Idle Keep
Games like Idle Keep include TBH: Task Bar Hero, Cookie Clicker, Dragon Cliff, Melvor Idle, and IdleOn - The Incremental MMO. We matched them by the tags players give Idle Keep on Steam (Casual, RPG, Idler, Incremental, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

TBH: Task Bar Hero
Shared: Idler · RPG · Pixel Graphics

Cookie Clicker
Shared: Idler · Casual · Incremental

Dragon Cliff
Shared: RPG · Idler · Casual

Melvor Idle
Shared: RPG · Casual · Idler

IdleOn - The Incremental MMO
Shared: Idler · Incremental · RPG

Firestone – Idle Clicker Online RPG
Shared: Idler · Incremental · RPG

Touhou Mystia's Izakaya
Shared: Casual · RPG · Pixel Graphics

Stardew Valley
Shared: RPG · Pixel Graphics · Crafting

Click the Button
Shared: Casual · Idler · Incremental

Idle Pins
Shared: Idler · Incremental · RPG

Idle Champions of the Forgotten Realms
Shared: Idler · Incremental · RPG

DAVE THE DIVER
Shared: Casual · Pixel Graphics · RPG

Graveyard Keeper
Shared: RPG · Pixel Graphics · Crafting

Horripilant
Shared: Idler · Incremental · Casual

Loot Loop
Shared: Casual · Incremental · Idler

Bloobs Adventure Idle
Shared: Casual · RPG · Idler

Digseum
Shared: Casual · Incremental · Idler

xiuzhen idle
Shared: Idler · Casual · RPG

Swag and Sorcery
Shared: RPG · Pixel Graphics · Incremental

Desktop Raid
Shared: RPG · Idler · Incremental

Cauldron
Shared: Casual · Incremental · Pixel Graphics

Alice's Gaze
Shared: Idler · Casual · Incremental

Weapon Shop Fantasy
Shared: RPG · Casual · Pixel Graphics

Increlution
Shared: Idler · Incremental · Time Management