Roblox puts AI game building on phones July 28

Roblox is bringing AI game creation directly into its mobile app, opening the door for people to build games from a phone with simple text prompts. The new feature, called Build, launches in public alpha on July 28th for users in New Zealand who are at least nine years old and have verified their ages.

According to Roblox, Build lets users turn prompts into a basic game inside the Roblox app, covering gameplay mechanics, environment, characters, visual style, sound, and more. The system uses a mix of Roblox’s own AI models and open source models.

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Roblox says the feature is meant for “rapid exploration and refinement of ideas,” though it also lowers the barrier to publishing more games on a platform already crowded with uneven content. The company argues its recommendation systems will keep low-quality output from spreading.

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“Our discovery systems are designed to highlight games with long-term retention, which doesn’t include AI slop.” “The quality of games on the homepage isn’t changing: If no one plays it—no one can find it.”

Published games made with Build will be playable globally by users 16 and older. Roblox says a base-level version will be free, with additional paid options for power users, though spokesperson Juliet Chaitin-Lefcourt told The Verge the company is not yet sharing specifics on that pricing.

AI agents coming to Build and Studio

Roblox is also developing new AI agents for both Build and Studio. The company says these will include:

• a playtesting agent
• an analytics agent
• an agent that can run experiments to improve engagement, retention, and monetization

Those tools are scheduled to arrive over the coming months.