Modifier Types

What problem does it solve?

This guide standardizes Victoria 3 modifier type definitions to ensure consistent modding and predictable game behavior.

Core Features & Use Cases

• Defines naming and metadata conventions for modifier types used by buildings, laws, scripted modifiers, static modifiers, mobilization options, and other content.
• Controls the workflow for creating, editing, and reviewing entries in common/modifier_type_definitions to prevent typos and broken consumers.
• Provides guidance on where definitions live, how to prefix keys, and how to align with existing consumer types to avoid misrouting of modifier effects.

Quick Start

Create or update a modifier type in common/modifier_type_definitions by following the structure and conventions described in this guide.