Simple Mod Support Framework is a and flexible modding solution for Unity projects. It allows developers to add basic mod support without building a complex scripting system.

The framework can load external JSON files and register custom items at runtime. Mod creators can define item names, descriptions, categories, prices, stack sizes, icons, and additional custom properties directly through JSON files.

The included safe sandbox system validates file paths, file types, file sizes, JSON data, and duplicate IDs to help prevent invalid or unsafe content from being loaded.

Key features include:

• External JSON loading

• Automatic Mods folder creation

• Custom item registration

• Runtime PNG and JPG icon loading

• Custom item properties

• Mod manifests with author and version information

• Duplicate ID protection and namespace support

• Mod dependencies and loading priority

• JSON validation and detailed error reporting

• Safe path and file validation

• Runtime mod reloading

• Mod Manager UI

• Example mods and demo scene

• Clean and customizable C# API

The framework is designed to be easily adapted to different genres, including survival games, simulators, RPGs, sandbox games, management games, and more.

Developers can connect the framework to their own inventory, shop, crafting, loot, or database systems and define how custom modded items behave inside their game.