Best AI Roblox Game Makers, Compared

Updated September 25, 2026

Disclosure: PromptBlox makes one of the tools on this page. Details about the other tools come from their own websites and help pages, checked on September 25, 2026. We did not test the other tools for this article.

AI Roblox game makers, also called Roblox game generators, fall into three groups. Roblox has its own tools: Build in the Roblox mobile app and Assistant in Roblox Studio. Plugins such as Lemonade and Rebirth add AI help inside Studio. Browser tools such as PromptBlox build a game outside Studio and hand it over as a file. Seele is included because people often compare it with these tools, but it makes browser and engine games rather than Roblox places.

• Only have a phone and want a simple game: Roblox Build, if it is available where you live.
• Already working in Roblox Studio: Studio’s Assistant, or a plugin such as Lemonade or Rebirth.
• Want a new game made from a description in a browser: PromptBlox, then Studio to playtest and publish.
• Not making a Roblox game: Seele targets browser games and other engines.

How we compared them

We did not give the tools a score or a rank. A tool that suits a player with a phone can be the wrong choice for someone who already has a place open in Studio. Instead, each tool is described by the same six questions:

1. Where it runs: the Roblox app, Roblox Studio or a web browser.
2. What it makes: a whole game, changes to a game you already have, or assets and scripts.
3. How you change it: chat, direct editing, or both.
4. How it reaches Roblox: whether you publish from the tool, from Studio, or not at all.
5. How to start and how usage is counted: free options and the type of plan. We left out prices because they change; each tool’s own page has them.
6. Who can use it: age rules, devices and regions the tool’s maker states.

Every cell in the table links to the page the fact comes from, or to our side-by-side comparison that lists those sources.

AI Roblox game makers side by side

Roblox Build

Roblox announced Build on July 16, 2026 as a mobile-first creation tab inside the Roblox app. You describe a game, Build creates a playable version, and you keep changing it in the same chat. Roblox’s Build help page says it is rolling out gradually, starting in New Zealand, Serbia and Singapore, and that simpler games such as clickers, arcade and collect-and-score games turn out best right now.

To use Build, your account must be set to 9 or older, have completed Roblox’s age check and be in a supported region. It is free to start with a daily AI usage allowance, and you can buy more usage with Robux. Publishing runs a safety check, and new Build games are open to players 16 and older by default.

You can open a Build game in Roblox Studio. Roblox notes that adding custom code there removes the game’s automatic content rating, so you would then fill in the maturity questionnaire yourself.

Good fit: you want to make and publish a simple game from your phone, and Build is available to you. Compare it with PromptBlox in PromptBlox vs Roblox Build.

Roblox Studio Assistant

Assistant is the AI helper built into Roblox Studio. Roblox’s Assistant guide says it can answer questions about Roblox development, create and change objects and scripts in your place, insert assets from the Creator Store, explain selected code, restyle parts with generated materials, and generate 3D meshes and procedural models. Chats are saved per place, so a conversation carries on between Studio sessions.

Assistant works on the place you have open, so it helps most when you already have a game in Studio and want help with one part of it. Roblox’s guide also says generated scripts might not work perfectly the first time; you can fix them yourself or ask Assistant to change them.

Studio is a free download for Windows and Mac, and playtesting and publishing happen in the same app.

Good fit: you have a computer that runs Studio and want AI help while you learn the editor. Our Roblox Studio AI guide covers AI tools that work inside Studio, and PromptBlox vs Roblox Studio explains how the two fit together.

PromptBlox

PromptBlox is a browser tool that makes a Roblox game from a description. You pick a build level and describe the setting, what players do and how they win. PromptBlox makes one concept image as the visual reference, then builds the world and its gameplay scripts while you follow the Activity feed and a 3D preview. You can send notes while it works.

After the first build, you change the game in chat. Each change is saved to the same project, and History keeps earlier versions. You can also import an existing .rbxlx place, up to 25 MB, as a new project.

There are four build levels: Light, Medium, High and Ultra. Build levels are not plans, but your plan decides which levels you can choose: Free and Lite use Light, Pro adds Medium, Max adds High, and Ultra and Ultra+ add Ultra. Builds and edits draw on a weekly usage allowance, and the Free plan includes a small one.

Every plan can export the game as a .rbxlx place file with its scripts. You open it in Roblox Studio on a Windows or Mac computer to playtest and publish. The first build is a starting point to test and refine, not a finished game. PromptBlox is for ages 13 and up.

Good fit: you want a whole first version of a new game from a description, with saved versions, before you open Studio. Read more about the PromptBlox AI Roblox game generator.

Lemonade

Lemonade, from Lemonade Labs, works through the Lemonade AI plugin in Roblox Studio, and you sign in with a Roblox account. Its terms say it works between Studio and its own service and does not host your project files, so the game stays in your Studio place. The plugin is free to install, and the terms describe a paid monthly subscription with higher prompt limits.

Good fit: you already use Studio and want an AI helper there. Sources and details are in PromptBlox vs Lemonade.

Rebirth

Rebirth is an AI assistant that connects to Roblox Studio through a plugin and works on new or existing places. Its site says it reads the objects and scripts already in your place, and that it can play the game in your Studio session and read server logs to fix errors. New accounts get 5 free credits, each prompt uses one credit, and it has paid monthly plans.

Good fit: you are adding features to a game you already have in Studio. Sources and details are in PromptBlox vs Rebirth.

Seele

Seele is a browser workspace where you describe a game and its agent plans and generates a playable result. Its guide lists Three.js for browser games and Unity, Godot and Unreal for engine projects. Roblox is not on that list, so Seele is a different kind of tool from the others here. It uses credits called Koins, with free Koins from first login, events and community tasks, and its indie developer page lists Unity export with paid plans.

Good fit: you want a browser game or a Unity, Godot or Unreal project rather than a Roblox game. See PromptBlox vs Seele for how the two differ.

Which one should you pick?

• You only have a phone. Roblox Build is made for phones, if your region and account are eligible. PromptBlox also runs in a phone browser for building and refining, but playtesting and publishing need Studio on a Windows or Mac computer. See making a Roblox game on a phone.
• You have a Chromebook. You can build and refine a game in PromptBlox in the browser, then use a Windows or Mac computer for the Studio steps. See making Roblox games on a Chromebook.
• You already have a place open in Studio. Start with Assistant, which is built in. Lemonade and Rebirth are other options that work inside Studio.
• You want a whole first version of a new game. PromptBlox builds the world and gameplay from your description and keeps each change as a saved version. Roblox Build also makes whole games, inside the Roblox app.
• You want to learn to code. Open Studio, write small scripts yourself and ask Assistant to explain code you do not understand. A game from any of these tools is also something to take apart: open its scripts in Studio and read how they work.

Whichever tool you pick, start small. One setting, one thing for players to do and a clear way to win are easier to test than a big world with many systems. Our guide to making a Roblox game walks through that first project.

Sources (checked September 25, 2026)

• Roblox: Creating with Build (Roblox Help) and the Build announcement (July 16, 2026)
• Roblox Creator Hub: Assistant guide, Studio setup and publishing guide
• Lemonade and Rebirth: the dated sources listed in PromptBlox vs Lemonade and PromptBlox vs Rebirth
• Seele: Seele guide and indie developer page
• PromptBlox: pricing, terms and v2.0 release notes

Frequently asked questions