Roblox will let you build a whole game just by describing it on your phone, no computer needed

[RadekVítek]

Roblox announced Build on July 16, a new mobile-first creation tool that turns a plain language text prompt into a working, playable game entirely inside the phone app, no coding and no computer required for the first time in the platform's history. Type something like let's make a cozy adventure game set in a dense forest with environmental obstacles, and Build generates a playable starting point covering gameplay mechanics, environment, characters, visual style and sound all at once, ready to be edited, playtested and shared

The feature runs on a broad mix of both open source and proprietary Roblox AI models, and shares the same backend, models and chat history as Roblox Studio, the platform's existing desktop creation suite, meaning a project started as a quick mobile prompt can be picked up and refined later in the full desktop toolset. That bridge between casual mobile tinkering and serious development puts Roblox's creation tools into more direct competition with established engines like Unity and Unreal, while also following similar AI game generation tools already introduced by Google, Microsoft and Tencent

Build enters public alpha testing July 28, starting exclusively in New Zealand on iPhone and iPad, open to age-verified users nine and older who want to create, though only users 16 and up will be able to publish their creations to a global audience. Roblox plans a free, basic version alongside paid options for more advanced users, with pricing details still unannounced, and expects to expand into more regions over the following months based on feedback from the initial test

Quality control is the obvious concern with any tool this accessible, and Roblox says it will rank AI-generated games using the same player retention based discovery system already governing the rest of the platform, explicitly keeping what it calls AI slop out of prominent homepage placement rather than building a separate filter specifically for AI content. Alongside Build, Roblox is also developing a new suite of AI agents to help creators with playtesting and analytics, beginning tests on the same July 28 date, part of a broader push that also includes an AI model for generating 3D game assets and a scene generation model capable of building entire editable, playable 3D environments from a single prompt

Roblox launches an AI-powered game-creation feature in its mobile app | TechCrunchtechcrunch.com