TL;DR
Roblox launched Build, a mobile AI creation tab that generates games from text prompts, which went into alpha in New Zealand on July 28.
Roblox announced Build on Wednesday, a new creation tab within the Roblox mobile app that allows anyone to turn a text message into a basic playable game without touching Roblox Studio or writing a line of code. A creator can describe something like a cozy forest adventure game with environmental obstacles, and Build will generate a starting point with game mechanics, environment, characters, sound and visual style. The feature begins public alpha testing in New Zealand on July 28 for age-verified users of nine years or older.
Build shares a backend with Roblox Studio, meaning creators can start a project on their phone and continue refining it on the desktop with the full set of Studio tools, or launch agents from Studio and check progress from mobile. The system is powered by a combination of Roblox’s proprietary and open source AI models trained on what the company describes as an exceptionally large set of 3D models and game-specific data. Roblox’s basic Cube model, which the company introduced earlier this year alongside Agentic Studio toolsgenerates game-ready objects that can drive, shoot, or otherwise behave as expected without manual scripting.
Roblox said it is aware of the quality risk that comes with lowering the barrier to creating games. The company said its discovery system ranks games by long-term retention, not age or volume, and that games no one plays will not appear on the home page, regardless of how they were created. Build’s published games will go through the same security checks and retention-based discovery rating as all other Roblox titles, and games aimed at younger players will undergo a thorough review before being added to the Roblox Kids or Select catalogs.
In addition to Build, Roblox will launch a set of agent tools for professional creators in the coming months. These include a playtesting agent that finds bugs before players find them, an analytics agent that answers questions about game performance in plain language, and an experiments agent that identifies tests to improve engagement and monetization. A new scene generation model is also being developed that will create complete, editable and playable 3D environments from a single text message.
The announcement comes as AI-generated content is flooding platforms faster than review systems can handle ita dynamic that fueled an 84 percent increase in App Store submissions and led Apple to crack down on low-quality AI-created apps. Roblox is betting that its retention-based discovery system will serve as a natural quality filter, showing only the games that players actually want to continue playing.
A basic version of Build will be free, with paid options for advanced users. The release will expand to more regions after the New Zealand alpha, and Roblox said it plans to share more creation tool announcements in the coming months. The platform has 132 million daily active users, any of whom could now prototype a game from their phone.
