Games like Mining Merchant
Games like Mining Merchant include Terraria, Starbound, Super Mining Mechs, Don't Starve Together, and Stardew Valley. We matched them by the tags players give Mining Merchant on Steam (Online Co-Op, Side Scroller, Sandbox, 2D, and Casual): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Sandbox · 2D · Crafting

Starbound
Shared: Sandbox · Online Co-Op · Crafting

Super Mining Mechs
Shared: Online Co-Op · Side Scroller · Sandbox

Don't Starve Together
Shared: Online Co-Op · Sandbox · Crafting

Stardew Valley
Shared: Sandbox · Relaxing · Crafting

Mining Mechs
Shared: Online Co-Op · Mining · Casual

Bloons TD 6
Shared: Online Co-Op · Casual · Sandbox

The Survivalists
Shared: Online Co-Op · Crafting · Sandbox

Potion Craft: Alchemist Simulator
Shared: Crafting · 2D · Relaxing

Luma Island
Shared: Online Co-Op · Casual · Crafting

PowerWash Simulator
Shared: Casual · Sandbox · Online Co-Op

The Escapists 2
Shared: Online Co-Op · 2D · Crafting

Tinkerlands
Shared: Online Co-Op · Sandbox · 2D

A Game About Digging A Hole
Shared: Sandbox · Mining · Crafting

Castle Crashers®
Shared: Online Co-Op · 2D · Adventure

Banana
Shared: 2D · Casual · Family Friendly

Forager
Shared: Sandbox · Crafting · 2D

Melvor Idle
Shared: Casual · 2D · Mining

Palworld
Shared: Online Co-Op · Crafting · Sandbox

Garry's Mod
Shared: Sandbox · Casual · Online Co-Op

Draw & Guess
Shared: Online Co-Op · Casual · 2D

DAVE THE DIVER
Shared: Casual · Relaxing · Adventure

Planet Centauri
Shared: Sandbox · 2D · Mining

PowerWash Simulator 2
Shared: Casual · Online Co-Op · Sandbox