Games like Wildmark
Games like Wildmark include Cookie Clicker, Shelldiver, Melvor Idle, Potion Craft: Alchemist Simulator, and Digseum. We matched them by the tags players give Wildmark on Steam (Idler, Incremental, Cozy, RPG, and Casual): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Incremental · Casual

Shelldiver
Shared: Incremental · Casual · Idler

Melvor Idle
Shared: Idler · RPG · Casual

Potion Craft: Alchemist Simulator
Shared: Crafting · Relaxing · Management

Digseum
Shared: Incremental · Idler · Casual

Fortune Mill
Shared: Idler · Incremental · Automation

Keep on Mining!
Shared: Idler · Incremental · Casual

Nodebuster
Shared: Incremental · Idler · Casual

Incredicer
Shared: Idler · Incremental · Casual

Cast n Chill
Shared: Idler · Cozy · Relaxing

Scritchy Scratchy
Shared: Incremental · Idler · Resource Management

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

Dragon Cliff
Shared: Idler · RPG · Incremental

Shop Titans
Shared: Idler · Crafting · RPG

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

Rusty's Retirement
Shared: Idler · Automation · Management

Tower Wizard
Shared: Idler · Incremental · Resource Management

Factory Town Idle
Shared: Idler · Incremental · Automation

Fracture Field
Shared: Idler · Incremental · Automation

Sludgineers
Shared: Incremental · Cozy · Relaxing

Loot Loop
Shared: Incremental · Idler · Casual

How to Train Your Cock
Shared: Idler · Cozy · Casual

Ropuka's Idle Island
Shared: Idler · Cozy · Casual

Forage Wizard
Shared: Incremental · Casual · Crafting