Build Roblox games
with AI agents
BloxBot is a free, open-source desktop app that connects the AI model of your choice to the official Roblox Studio MCP. Describe what you want in plain English and watch the agent build it in Studio.
Make a racing game with desert, neon city, and sky island tracks. Add vehicle physics and a multiplayer lobby.
Done. I've created three tracks with terrain, obstacles, and checkpoints:
All deployed to your Studio workspace. Ready to playtest.
Features
Everything you need to build games
Agentic Studio control
BloxBot doesn't suggest code. It operates Roblox Studio directly. Parts, scripts, terrain, UI, entire game systems.
Official Roblox Studio MCP
Powered by Roblox Studio's built-in MCP server. Your AI sees your full project structure, assets, and scripts in real time. No plugins to install.
Any AI model
Claude Fable 5, Gemini 3.5 Flash, GPT-6 Astra, or a local model. Switch between them mid-project and use whichever fits the task.
Bring your own subscription
Sign in with a ChatGPT Plus or Pro plan instead of buying API credits, or paste an API key. BloxBot never sits between you and the model.
Production-ready Luau
Generates typed Luau scripts with proper error handling and Roblox best practices. Not toy code.
Playtest before you ship
BloxBot writes the plan first: the goal, the steps, what to watch for, and what counts as passing. Then it runs it in Studio.
How it works
From zero to game in three steps
Download and enable
Download BloxBot and open Roblox Studio. Enable the built-in MCP server in Studio's Assistant settings. No plugins, no config files, no terminal.
Connect your AI
Pick your model. Claude Fable 5, Gemini 3.5 Flash, GPT-5.5. The AI connects to Studio's official MCP and gains full context of your project.
Describe and build
Tell the AI what to create in plain language. BloxBot translates your ideas into real Studio actions: scripts, parts, terrain, UI.
Add coin pickups with sparkle effects and a score counter
Created 20 coins with particle effects, a ScreenGui counter, and collection sounds. Coins respawn after 30 seconds.
Benchmarks
Which models are best for Roblox?
Results from Roblox's OpenGameEval benchmark — 117 evaluations across two skill categories. All of these models are available in BloxBot.
Pass@1 = first-attempt success rate. Pass@5 = success within 5 attempts. Scores last published June 2026; three eval checks changed July 24 without a revised run. Source: Roblox/open-game-eval
Guide
AI + Roblox development
Creator news, AI workflows, and practical guides for building better Roblox games.
Opus 5.5 Roblox Crossroads: three hours, ten agents, one map
Stravant's public, copyable Roblox Crossroads remake makes the viral Opus 5.5 claim unusually easy to inspect. See what three hours and ten agents produced.
Read moreCase studyGPT-6 Astra Roblox racer: MCP, Blender, and the full prompt
A 30-minute Roblox kart racer claim came with a detailed prompt. See how it specifies Studio MCP, Blender assets, Luau gameplay, and playtesting.
Read moreNewsRoblox adds AI texture generation and imported mesh segmentation
Studio can restyle existing meshes, split imported meshes into named parts, and preview generated models from images. Here is what each tool does and how to use it.
Read moreNewsRoblox Studio MCP now routes every AI tool call to a specific Studio
The August Studio MCP update replaces set_active_studio with studio_id, adds Place IDs to discovery, and shows connected AI clients in Assistant Settings.
Read moreBenchmarksWhat GPT-6 Astra means for Roblox development
GPT-6 Astra launched September 3, 2026 and scores 67 on the Artificial Analysis Coding Agent Index. What the numbers, the price, and the demos mean for Roblox.
Read moreGetting startedUse your ChatGPT or Codex subscription in BloxBot
BloxBot runs on OpenCode, so you can sign in with a ChatGPT Plus or Pro plan instead of buying API credits and build Roblox games on your existing Codex quota.
Read moreUpdates
What we've been building
last year, I connected Roblox Studio with Claude, and I felt like a developer god. announcing bloxbot.ai a desktop app that comes with all the things you need to get started with agentic Roblox Studio development. completely free and open-source
Hearing good things about using GLM-5 or Claude Opus 4.6 for Roblox game development? Available in bloxbot.ai now!
NOOOOO DON'T PAY FOR A GLORIFIED MCP SERVER TO BUILD ROBLOX GAMES WITH AI
Open source
Built in the open, for everyone
MIT licensed. No hidden costs, no vendor lock-in. Built on the official Roblox Studio MCP and OpenCode. Inspect every line, contribute improvements, or fork it to build something entirely new.
Everyone deserves great
game dev tools
Whether you're building your first obby or a complex multiplayer RPG, BloxBot meets you where you are. Free forever.