AI Darth Vader in Fortnite last year and now Gemini's pure world model show how fast AI is evolving. We'll see constant leapfrogging between engine centric AI and world model centric AI until they come together for maximum effect.

World models have huge advantages in vast knowledge of the world and ability to mash up varied content and styles. Engines have huge advantages in a stable representation of the world, reproducible simulation, and GPU and power efficient rendering.