Reading the Rules of Baba Is You

Explore the unique sentence-based rule system of the puzzle game Baba Is You in this 2020 GDC Virtual Talk. Delve into the implementation process, iterations, and challenges faced during development as explained by the game's creator, Arvi Teikari. Learn about the game's basic gameplay, rural system, and Lua tables. Discover the multiple passes required for rule processing, including conditional words and rework. Examine diagrams and examples that illustrate the complex mechanics behind this innovative puzzle game. Gain valuable insights into game design and programming techniques used to create a rule-based system that allows players to manipulate the game's logic directly.

Introduction
Part 1 Introduction
What is Baba is You
Basic Gameplay
Rural System
Lua Tables
How it actually works
The first pass
The second pass
The third pass
Extra steps
Format
Conditional Words
Rework
Diagram
Examples
Conclusions