Games like Soul Proprietor
Games like Soul Proprietor include Idle Champions of the Forgotten Realms, Cookie Clicker, Melvor Idle, Nodebuster, and Kingdom Rush - Tower Defense. We matched them by the tags players give Soul Proprietor on Steam (Adventure, Casual, Strategy, Arcade, and Idler): closest matches first, and among equally close ones the better-known games.

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

Cookie Clicker
Shared: Casual · Idler · 2D

Melvor Idle
Shared: Casual · Idler · Adventure

Nodebuster
Shared: Casual · Strategy · Idler

Kingdom Rush - Tower Defense
Shared: Strategy · Casual · 2D

Shelldiver
Shared: Casual · Arcade · Idler

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · 2D · Casual

Slime Rancher
Shared: Adventure · Casual · Colorful

Game Dev Tycoon
Shared: Strategy · Casual · 2D

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

Zuma Deluxe
Shared: Arcade · Strategy · Casual

Dragon Cliff
Shared: Strategy · Idler · Casual

Plants vs. Zombies GOTY Edition
Shared: Strategy · Casual · 2D

To The Core
Shared: Casual · Adventure · Arcade

Kingdom Rush 5: Alliance TD
Shared: Strategy · 2D · Cartoony

Incredicer
Shared: Casual · Idler · Strategy

Totally Accurate Battle Simulator
Shared: Strategy · Adventure · Funny

That's not my Neighbor
Shared: Adventure · Casual · Arcade

Kingdom Rush Origins - Tower Defense
Shared: Strategy · Casual · 2D

Swords and Souls: Neverseen
Shared: 2D · Indie · Idler

Keep on Mining!
Shared: Casual · Idler · Arcade

Bloons TD 6
Shared: Strategy · Casual · Cartoony

The WereCleaner
Shared: Casual · Strategy · Cartoony

Zero Stress King: Idle Defense
Shared: Strategy · Casual · Idler