Guide · Asset Vault · Studio

Mod any game.
Legally.
Right here.

Modsmith puts the rules, the free assets and a full coding studio in one place. Write the code, draw the textures, press Build, and get a mod file you can drop into your game. No installs, no sketchy downloads.

Start a mod I'm brand new to this
minecraft studio · build
# data/hello/function/starter_kit.mcfunction
give @s minecraft:diamond_sword 1
effect give @s minecraft:speed 30 1
tellraw @s {"text":"Kit delivered!"}

▸ Building Minecraft project…
  Namespace "hello" · 5 data files · 2 resource files
  ✔ hello-datapack.zip · 5 files · 1.7 KB
  ✔ hello-resourcepack.zip · 2 files · 692 B
▸ Drop into .minecraft/saves/World/datapacks

Brand new?

Never modded anything? Perfect.

Guided mode turns each studio into a set of short lessons. You change one thing at a time, Modsmith checks it, and you finish with a mod running in your own game. No coding experience needed.

Start my first mod

What you need

  • The game on a computer. For Minecraft, that's Java Edition, not phone or console.
  • This website. Nothing to install while you build.
  • About 15 minutes for your first mod.

What Guided mode does

  • Explains every file in plain English
  • Lets you tap any jargon word to see what it means
  • Highlights the exact line to change
  • Checks your work and gives hints when you're stuck
  • Shows you exactly where the files go in your game

Where to start

Five studios, five worlds

Each studio is themed after its game and opens with a starter mod that already builds. Games that need desktop tools, like Ready or Not, get a guided workbench instead.

mcfunction · JSONBeginner
Minecraft Data pack + resource pack

Commands, recipes and your own textures for Java Edition 1.21.1.

→ Ready-to-install .zip
C#Intermediate
Terraria tModLoader mod source

New weapons and items in C#, with sprites drawn in the studio.

→ ModSources folder
JSONBeginner
Stardew Valley Content Patcher pack

Add items, edit prices and stock Pierre's shelves without writing C#.

→ Ready-to-install .zip
LuaIntermediate
Factorio Lua mod

Prototype entities and script events for Factorio 2.0.

→ Ready-to-install .zip
LuaIntermediate
Garry's Mod Lua addon

Hooks, HUDs, console commands and materials on the Source engine.

→ Addon folder
Game Library
20 more games Ready or Not · Skyrim · Lethal Company

Games modded with Unreal Engine, Unity, the Creation Kit and official toolkits, with the tools you need and where mods live.

→ Browse the library

Everything a modder needs

Most people quit modding in the first hour, stuck on setup, licenses or a missing file. Modsmith removes those walls.

The Guide

Plain-language rules for modding without getting a takedown or a ban.

  • What EULAs actually allow
  • Asset licenses decoded: CC0, CC-BY, NC
  • Multiplayer and anti-cheat red lines
  • Publishing and getting paid
Read the guide

The Asset Vault

Every free texture, model, sound and tool we trust, each tagged with its license.

  • CC0 textures, models and HDRIs
  • Sound effects and music sources
  • Official SDKs and docs per game
  • Modsmith's own free sprites and palettes
Open the vault

The Studio

A code editor, file tree, pixel editor and build system in one browser tab.

  • Syntax highlighting per language
  • Pixel editor with game palettes
  • Validation that catches common mistakes
  • One-click build to an installable mod
Open the studio

From idea to installed in four steps

  1. Pick your game

    Open its studio. A working starter mod is already loaded.

  2. Write the code

    Edit functions, scripts or JSON with highlighting and autosave.

  3. Add your assets

    Draw textures in the pixel editor or upload your own files.

  4. Build and play

    Modsmith checks your files, packages the mod and tells you where it goes.