Roblox launches Build, an AI-powered mobile game creation tool

Roblox is launching Build, a mobile-first AI creation tool that lets anyone turn text prompts into playable games directly within the mobile app. The feature, announced on July 16, 2026, aims to lower the barrier to game creation by using a mix of open-source and proprietary Roblox AI models to generate gameplay mechanics, environments, characters and sound from natural language descriptions Source: The Verge.

Public alpha and rollout

Build will enter public alpha testing on July 28th in New Zealand for users aged nine and older with verified ages. Published games will be globally available to users 16 and up. A base version is free, with paid options for power users, and Roblox plans to expand to more regions in the coming months Source: TechCrunch.

Retention-based discovery

To address concerns about an influx of low-quality AI-generated content, Roblox states that games made with Build will be ranked by the same retention-based criteria as other experiences. “If no one plays it—no one can find it,” the company said, emphasizing that the quality of games on the homepage won't change Source: Engadget.

Ecosystem and developer tools

Build shares a back end with Roblox Studio, allowing creators to start on mobile and refine on desktop. Roblox is also developing AI agents for playtesting, analytics and experimentation, as well as a scene-generation model, to be released in the coming months Source: The Next Web.