Last year, Google showed off Genie 3, an updated version of its AI world model with impressive long-term memory that allowed it to create interactive worlds from a simple text prompt. World models like Genie 3 create a video that responds to your control inputs, allowing you to explore the simulation as if it were a real virtual world. Genie 3 was a breakthrough in world models because it could remember details of the world it was creating for a much longer time. Project Genie is essentially a cleaned-up version of Genie 3, which plugs into updated AI models like Nano Banana Pro and Gemini 3. Google has a number of pre-built worlds available in Project Genie, but it’s the ability to create new things that makes it interesting.