Roblox announced Build, a new AI tool that lets you turn text queries into basic games directly within the platform’s mobile app. Public alpha testing will begin on July 28th in New Zealand for verified users ages 9 and up. The tool is powered by a wide range of AI models, both open-source and Roblox’s own development.
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What can Build do and how does it work?
Build is a content creation tab within the Roblox mobile app. Simply enter a text query like “Let’s make a cozy adventure game set in a dense forest with environmental obstacles,” and the system will generate a playable starting point. The creator can then refine the game, test it, share it with friends, or publish it to the platform.
Build automatically generates:
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game mechanics and environments;
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characters and visual style;
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sound effects.
All without leaving the app.
The tool is tightly integrated with Roblox Studio, a desktop editor for game creation. They share a common backend, models, and chat history: you can start a project in Build on your phone and continue it in Studio on your computer.
The basic version of Build will be free, but advanced users will have access to paid options.
What AI models are behind Build?
Build uses both open-source models and proprietary Roblox developments. Key technologies include:
Cube Foundation Model — Roblox’s own 3D model, open-sourced in March 2025. It generates 3D game objects based on a text prompt, ranging from simple objects to vehicles. Since its launch, Cube has created over 1.8 million assets.
Procedural Models — generate parametric 3D objects based on text or images without manual modeling.
Plans include a model for generating entire editable 3D scenes from a single prompt. Roblox models are trained on a uniquely large set of 3D models and game data, enabling them to create functional objects and scenes ready for integration into live games.
When and who will be able to use Build?
Roblox plans to expand access to other regions in the coming months. Games created through Build undergo standard safety checks, are included in a general candidate pool, and are ranked according to the same system as all other projects on the platform.
What else is Roblox preparing: AI agents for creators?
In addition to Build, Roblox is testing three AI agents that will appear in Build and Studio in the coming months:
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Playtesting agent – identifies bugs before players encounter them.
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Analytics agent – answers questions about the game in natural language, without the need to understand analytics dashboards.
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Experiment Agent – Offers tests to increase retention, engagement, and monetization.
Roblox CEO David Baszucki noted that Build will allow creators to “iterate faster, with fewer technical constraints—and have more room to experiment than a single developer or small team could in the past.” He added:
“This isn’t just for established studios. Some of the most important work in the industry has come from newcomers—often former Roblox players—with a single, focused idea.”
How does Roblox plan to combat “AI garbage”?
AI game generation is raising concerns among developers. According to a GDC 2026 survey, 52% of gaming industry professionals believe generative AI has a negative impact on the industry. Critics fear that lowering the barrier to entry will lead to a flood of low-quality, similar games.
Roblox is responding to this with a retention ranking system: Build games are placed in the same system as all other games. If no one plays a game, it doesn’t make it to the homepage. The company stated: “Our search systems are designed to highlight games with long-term retention—and that doesn’t include AI-generated garbage. The quality of games on the homepage doesn’t change: if no one plays it, no one will find it.”
Roblox Build isn’t just another AI tool. It’s an attempt to make game creation accessible to anyone with the ability to articulate ideas. Whether the platform can be cluttered remains to be seen, along with the retention ranking system. But the first step has been taken: July 28th is the launch.
