Founder & CEO, RR International Studio

Rafael Ethan Kuhn

I'm 16, I live in Switzerland and I build Brickbrain, an AI that builds Roblox games with you. I also make the renders and pictures around it.

Switzerland, 2026See the work

About

I build the tools I wish I had. Then I test them on my own games.

Lucas (16, everyone calls him Rusty) and I started RR International Studio in 2026. We wanted to make Roblox games. The AI tools we tried mixed up Luau and normal Lua, guessed coordinates and forgot the project by the next day. So we started building our own.

I'm the CEO, which mostly means product, design and testing. I decide what Brickbrain should do, design the screens and kits, run the tests and say when something isn't good enough yet. Most of the code is written by AI coding agents. I plan it and check every step. School comes first.

Where things stand

Brickbrain is an internal prototype. No outside users, no revenue, and the studio isn't registered as a company yet.

Work

Brickbrain

The app with a demo profile. The content follows a real run from 5 Nov 2026.

An AI that builds Roblox games with you. It asks the questions that matter, writes a plan in nine steps and doesn't build anything until you say go.

What I did

Product and design, from the first sketch to version 0.3.3 (12 Nov 2026)
A shared brain on Cloudflare Workers and D1. A lesson only counts once it has been reviewed, and other developers can plug in their own AI over MCP
A model router with a cost limit, plus our own benchmark, RR-Bench. On 15 hard Roblox tasks the same local model went from 51 to 65 points. It's a small test, so I read it as a signal, not as proof

More about Brickbrain

3D & prototypes

Training for Brickbrain

These pieces were built by AI agents. I gave the direction, judged every round and sent it back until it was good enough. Whatever worked became a lesson for Brickbrain.

SMG Classic v6

3D model · Blender to Roblox

A game-ready weapon for a first-person Roblox prototype. This is version 6. I called the one before “very, very low quality”, so model and texture got rebuilt.