“Instead of authoring dialogue trees for characters in your islands, conversations transforms an NPC into an AI-powered character capable of unscripted dialogue and interactions with players, like a quest giver or narrator,” Epic says. “You define who the character is with simple prompts—how they think, what they know, and how they behave—and then select a voice that matches their persona.”

However, Epic has updated its rules for developers to try and ensure that these AI characters don’t become problematic — including that they can’t be romantic partners:

1.22.1. You must not create a persona designed to provide medical or mental health guidance.

1.22.2. You must not create a persona that role-plays as, simulates, or impersonates a date, romantic partner, or other intimate companion.