To understand GUTS, you must understand the workflow of creating a basic mod.
While you'll still need Photoshop or 3D Max for textures and models, GUTS handles the implementation of animations and UI. Getting Started: The First Launch torchlight 2 editor
Let’s walk through a "Hello World" of Torchlight II modding: To understand GUTS, you must understand the workflow
Used to create or modify monsters, heroes, and items. To understand GUTS
Congratulations. You just broke the economy. (But it’s your economy, so it’s fine.)