Skip to main content
For Modders

Tools

PrismaUI F4 and the other tools we build alongside it for Fallout 4 modding.

PrismaUI F4
F4SE Frameworkv2.1.0

PrismaUI F4

HTML, CSS, and JavaScript UI framework for Fallout 4, powered by in-process Ultralight 1.4.0.

View tool →
Behavior Graph Studio
.NET / AvaloniaModding Tool

Behavior Graph Studio

A visual editor for Fallout 4's Havok behaviour graphs. Open, edit, and save animation state machines directly, no Havok Content Tools required.

View tool →
Prisma Designer
Browser ToolPrismaUI F4

Prisma Designer

A no-install visual editor for building HTML/CSS/JavaScript views for PrismaUI F4, with export, binding, visual scripting, and optional live game preview.

View tool →