Roblox Will Let Users Build Games From Text Prompts on Their Phones

Roblox wants to make game creation as easy as texting a friend. The company is rolling out a new mobile tool called Build that lets people type a text prompt and get a working game back, no coding or design experience required, directly inside the Roblox app.

According to a Roblox blog post, Build handles the pieces that normally take a developer real time and skill to assemble: gameplay mechanics, environments, characters, visual style, and sound. It runs on a mix of Roblox's own AI models and open source models. The company describes it as a tool for "rapid exploration and refinement of ideas," essentially a way to sketch out a game concept in minutes instead of days.

This is the latest in a string of AI bets Roblox has made recently. The company has previewed an AI world-model system in the same vein as Google's Project Genie, built a foundation model developers can use to generate 3D assets, and shipped an AI assistant chatbot to help creators while they work in Roblox Studio, the platform's traditional development software. Build is the version of that ambition aimed squarely at mobile users who have never opened a game engine in their life.

That accessibility is exactly what makes Build a little unsettling for anyone who already finds Roblox's library uneven in quality. The platform is enormous and famously variable, packed with everything from polished, long-running hits to throwaway experiences that barely function. Handing millions of phone users a button that generates a full game from a sentence seems like a recipe for flooding the platform with even more low-effort content, sometimes referred to as "AI slop."

Roblox is aware of the optics. The company says it isn't changing how games get surfaced to players. Build-made games will be judged by the same discovery criteria as anything built in Studio, meaning retention: does anyone actually keep playing it. Games that don't hold players' attention, in theory, simply won't surface.

"Our discovery systems are designed to highlight games with long-term retention, which doesn't include AI slop," Roblox said in its post. "The quality of games on the homepage isn't changing: If no one plays it, no one can find it."

That's the company's bet, at least. Whether an algorithm tuned for retention is enough to keep a wave of AI-generated clutter from swamping search results and browsing pages within the app is something that will only become clear once Build is actually in wide use.

A cautious rollout

For now, Roblox is moving carefully rather than flipping the switch worldwide. Build enters public alpha on July 28th, limited to users in New Zealand who are at least nine years old and have completed age verification. Once a game is published through Build, though, it becomes playable by anyone globally who is 16 or older. That split, a narrow test market for creators but a global audience for the output, suggests Roblox wants to study how the tool gets used before opening the floodgates on the creation side.

Pricing follows a familiar freemium shape. A "base-level" version of Build will be free. Roblox says there will also be paid options aimed at "power users," though it hasn't detailed what those tiers include or cost. A company spokesperson, Juliet Chaitin-Lefcourt, told The Verge that more details will come "as we continue to roll out to more regions in the coming months."

More AI help is coming for developers

Build isn't the only AI tool Roblox is adding. The company is also building a set of AI agents meant to support developers across both Build and Studio. That includes a playtesting agent to help catch problems before launch, an analytics agent to help creators understand how players are engaging with their games, and an agent designed to run experiments aimed at boosting engagement, retention, and monetization. Roblox says these will ship over the coming months.

Taken together, the moves point to a platform betting heavily that AI can lower the barrier to game creation without lowering the bar for what gets seen. Roblox has built its entire growth story around user-generated content, and AI tools that let anyone, on any device, spin up a playable game fit naturally into that strategy. The real test is whether the platform's discovery systems can actually separate the games worth playing from the flood of new ones AI is about to make possible. New Zealand users get the first look starting July 28th, and how that limited alpha performs will likely shape how fast, and how far, Roblox expands it from there.