Google DeepMind has a new version of the AI that builds whole worlds you can walk around in while it's still making them up. It's called Genie 4, and this time the worlds come with their own sound, including people who talk back.

File photo of the entrance to 6 Pancras Square in London's King's Cross, where Google DeepMind is based. Photo: Gciriani / Wikimedia Commons (CC BY-SA 4.0), cropped