Games like Horus IDLE
Games like Horus IDLE include Your Chronicle, Cookie Clicker, Banana, Dragon Cliff, and Touhou Mystia's Izakaya. We matched them by the tags players give Horus IDLE on Steam (Casual, RPG, Point & Click, Auto Battler, and Incremental): closest matches first, and among equally close ones the better-known games.

Your Chronicle
Shared: RPG · Auto Battler · Incremental

Cookie Clicker
Shared: Casual · Incremental · Collectathon

Banana
Shared: Casual · Incremental · 2D

Dragon Cliff
Shared: RPG · Casual · Incremental

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

Click the Button
Shared: Casual · Incremental · Point & Click

Firestone – Idle Clicker Online RPG
Shared: Incremental · Auto Battler · RPG

DAVE THE DIVER
Shared: Casual · Pixel Graphics · RPG

Cauldron
Shared: Casual · Incremental · Auto Battler

Melvor Idle
Shared: RPG · Casual · 2D

Horripilant
Shared: Casual · Incremental · Dungeon Crawler

Digseum
Shared: Casual · Incremental · Point & Click

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

Travellers Rest
Shared: RPG · Pixel Graphics · Casual

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

Plantera
Shared: Incremental · Collectathon · Point & Click

Stoneshard
Shared: RPG · Pixel Graphics · 2D

Stardew Valley
Shared: RPG · Pixel Graphics · Casual

Loot Loop
Shared: Casual · Incremental · Auto Battler

There Is No Game: Wrong Dimension
Shared: Point & Click · Casual · Pixel Graphics

Vampire Survivors
Shared: Casual · 2D · Pixel Graphics

DELTARUNE
Shared: RPG · Pixel Graphics · 2D

Alice's Gaze
Shared: Casual · Incremental · RPG

Proverbs
Shared: Casual · Collectathon · 2D