Games like BlackForge: A Smithing Adventure
Games like BlackForge: A Smithing Adventure include Slime Rancher, Totally Accurate Battle Simulator, Disney Dreamlight Valley, 鬼谷八荒 Tale of Immortal, and BONEWORKS. We matched them by the tags players give BlackForge: A Smithing Adventure on Steam (Casual, Simulation, Adventure, Crafting, and Sandbox): closest matches first, and among equally close ones the better-known games.

Slime Rancher
Shared: Adventure · Simulation · Casual

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Adventure

Disney Dreamlight Valley
Shared: Simulation · Adventure · Casual

鬼谷八荒 Tale of Immortal
Shared: Simulation · Sandbox · Singleplayer

BONEWORKS
Shared: VR · Sandbox · Physics

Garry's Mod
Shared: Sandbox · Casual · Physics

My Time at Portia
Shared: Simulation · Casual · Crafting

Graveyard Keeper
Shared: Simulation · Crafting · Sandbox

Wobbly Life
Shared: Adventure · Simulation · Casual

DAVE THE DIVER
Shared: Casual · Adventure · Simulation

Goat Simulator
Shared: Simulation · Casual · Sandbox

House Flipper
Shared: Simulation · Casual · Sandbox

Don't Starve
Shared: Adventure · Crafting · Sandbox

Portal Knights
Shared: Adventure · Sandbox · Crafting

Potion Craft: Alchemist Simulator
Shared: Simulation · Crafting · Singleplayer

Terraria
Shared: Sandbox · Adventure · Crafting

Stardew Valley
Shared: Simulation · Sandbox · Crafting

Blade and Sorcery
Shared: VR · Sandbox · Simulation

The Scroll of Taiwu : Beyond The Dome
Shared: Sandbox · Simulation · Adventure

I Am Future: Cozy Apocalypse Survival
Shared: Casual · Simulation · Crafting

SPORE™
Shared: Simulation · Sandbox · Casual

Kerbal Space Program
Shared: Simulation · Sandbox · Physics

Growtopia
Shared: Casual · Simulation · Adventure

People Playground
Shared: Sandbox · Simulation · Physics