Picture yourself in a racing game, where you're AI-generating the vehicle you'll compete with. Or in a sandbox combat scenario, where you're constructing all your machines and weapons as you go. A centipede tank with four turrets? A flying bat drone? Roblox is shutting down.its new CubePart AI modelinto its platform and game development tools, and it is set to meankids and other playerscreating elements in games that have functional moving components.
CubePart AI, an open-source artificial intelligence model developed by Roblox hasjust published research onand will be launching its platform, which is an extension of 3D AI-created objects that Roblox unveiled last year. This time, however, the objects can include functional components that align with the game's physics.
Existing AI models are capable of generating multipart objects, but Roblox claims in a recent research paper that its model offers improvements. It highlights the ability to train on a larger number of objects (2 million parts and half a million overall assets) and to label object components using AI more efficiently. This advancement could lead to real, functional items that operate within games using current game engines.
Automated moving tanks, robots, or surveillance skulls?
The AI that generates models will function within Roblox Studio for creators, while also being available to players in games that support it, beginning today.
"Our vision is that any two-person studio can develop a large and intricate game, but as we continue to push forward, why not allow more of our players to become creators, without needing to launch a full-scale studio product?" Anupam Singh, Roblox's senior vice president of engineering, says to me during a Zoom chat.
Unusual examples from Roblox's research paper illustrate just how bizarre things can become: a "floating surveillance device located within a human skull," featuring cameras, moving spinal vertebrae, and a "sensor ring." Another example is "a long-range weapon fashioned from a living old tree," equipped with magical berry ammunition and a vine scope.
This will not be limited to a small, separate area — it's something you can directly incorporate into your in-game activities. "The approach we've discovered is that unless you embed it within engaging gameplay, it eventually becomes somewhat dull," Singh explains. "You're creating an object, but then you need all the additional gameplay elements around it."
The dynamic creations have inherent boundaries — Singh explains that natural failure points will set limits to prevent things from becoming excessively large — and they are not yet capable of twisting and moving like living beings, so their primary purpose is for machines, suits, and vehicles rather than aliens and companions, although golem-like robots could still be feasible.
Where are the limits?
I saw signs of Roblox's generative AI ambitionsBack in 2023, but the situation in 2026 is even more bizarre. Much of its vision is already achievable. However, it's unclear if my children or others will be interested. When I explained the AI changes to my 13-year-old who plays Roblox, he made a face and asked "why?" Parents might feel the same.
Singh mentioned that although the potential is vast, the creation of any object will be regulated similarly to how AI-generated content was managed before. Freeform AI generation will be limited to games that developers decide to incorporate the new model into—it's not something you can access at any time. Nevertheless, where will all these elements lead us, and will the AI costs related to these generative tools be sustainable in the long term without a subscription?
The next phase is world creation.
The latest CubePart AI features represent another advancement toward more lifelike and dynamically created shared environments. Roblox Reality, set to launch later this year or in early 2027, is designed to produce games that operate at 2K resolution and 60 frames per second through the use of AI -- a service that apparentlywill have some subscription tied to it.
Another more bizarre project, titled Game Cartridges, is trying to investigate collaborative experiences within AI-created environments. Currently, generative AI is primarily an individual activity, not a team effort — and it remains challenging to have generative AI modify something that has already been created.
Singh states that AI is not yet advanced enough to create world models that can maintain sufficient stability for multiplayer collaboration or gameplay, but the playable demos inRoblox's World Research Stationdisplay a sign of what is to come: It's comparable to what Google is striving for with itsGenie 3 3D world creation generative AI, which was launched in February.
The concept of dynamically generated worlds and creations reminds me of the metaverse, and for a company like Roblox, which has essentially built its own metaverse, it makes me curious about when such experiences might arrive on VR headsets from Meta, or even augmented-reality glasses.
We no longer use the term metaverse, but let's consider what the metaverse represents. It is a fully developed environment that you can enter and engage with," explains Singh. "World models are typically designed for individual use. However, what if everyone could exist within the same world, and when you alter the world's state, I would be able to see those changes. This kind of multiplayer cooperation is what will make world models compelling.
CubePart is just a single component in the evolving Roblox AI puzzle, but Roblox is not the only company working towards generative worlds. Rather, consider Roblox as a canary in the gaming industry's mines. It's a place where many studios might soon be headed.
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