A Creative AI project by Javier Amaya, Rapid Stories AI.

I asked my kids, Lukas and Lucia: do you like Kaiserswerth? There is where they go to school everyday. They answered with a short: Yes. But it could be more fun. That was the brief.

I teach my kids AI. Not as a toy. As a tool to build things. To tell stories. To create.

So I built the town they asked for: KAISER KREW, a builder game somewhere between GTA, Fortnite and Tony Hawk, set in the real streets of Kaiserswerth.

Before one line of code, six target images. Made in Higgsfield with GPT Image 2.5, 16:9. Every prompt combines three references: a real Street View photo of the place, an art style, a character.

Real prompt, shortened: "In-game screenshot of a premium stylized 3D open-world action-sports game (Fortnite / modern Unreal stylized quality). Location: Klemensplatz in Kaiserswerth from the FIRST reference photo, recognizable, rendered in the painted art style of the SECOND reference at sunset with warm lamps glowing. Gameplay: the teen lion boy from the THIRD reference rides a player-built zipline across the square; below, a crowd of animal townsfolk cheers; another teen on a BMX hits a quarter pipe built by players …"

Then: build one corner until it matches the picture. Only then grow the town. Every change goes next to the target image or the real photo. Before, after, better or not.

I play every build. I say what's wrong, straight. Each decision goes into one table every model must follow. My job is the eye: what works, what doesn't, where the story goes.

Four days. One person. A team of AI models, each with a job:

The handover: one state file holds the plan, every decision and every open job. When a model hits its usage limit, a scheduled restart fires one minute after the reset and the next model picks up from that file. A watchdog checks every 30 minutes. The Mac stays awake. The game kept building overnight.

The rules: no two models edit the same file at once. No model commits code. Nothing goes online without my word.

The tools are wired in as MCP servers, so agents call them directly: Higgsfield for images, 3D models and motion; Magnific for voices and sound. The stack: three.js and Rapier physics in the browser, on laptop and phone. GitHub and Vercel to ship. Supabase for scores and accounts, coming next.

Map data. Real photos. OpenStreetMap gives every street, square and building outline. Street View photos give the facades. Klemensplatz. The tram stop. The Markt. The linden corner. The Suitbertus-Gymnasium. If you live here, you know them. At the end of every street: the Rhine.

Mila, Lukas, Nova, Lucia, Leon and Van. Teen riders with street-maker backpacks: spray cans, duct tape, zip ties. No pro gear. The recipe:

The townspeople follow the same recipe, from my own designs. They have jobs. The post gets delivered. Kids play tag. At sunset the whole town gathers at the fountain and cheers your landings. Real prompt, shortened: "Character model reference sheet for a 3D modeller: MILA, the fox girl, redrawn alone. Full body, head to toe, facing the camera, symmetrical relaxed A-pose (arms 45 degrees down and away from the body) … Keep her exactly as in the reference: anthropomorphic teen fox girl, orange-red fur …"

Ride the real town on BMX, skateboard, longboard, inline skates, quad skates, scooter or hoverboard. Each has its own feel. Some don't roll on grass, so you carry them or switch.

Spot a gap. Build a ramp from what the street gives you. Send it. Land it.

One score, many ways to earn it: tricks, gaps, grinds on benches and rails, slaloms through bollards and parked cars, clean landings. Link moves into a FLOW chain and the multiplier grows.

The longer you ride, the faster you go. Boost pads add a kick, and you can collect them and place your own.

Build in the middle of a street and the Ordnungsamt comes. A timer starts. Then they take it down.

Collect materials around town: planks, pallets, old doors, crates, traffic cones, duct tape, zip ties. They come from recycling containers and "Zu verschenken" boxes, the way Germans give things away on the street. Grab one and it reappears somewhere else.

Build with the dashboard: kicker, rail, water pipe, trampoline, plank bridge, zip line. Choose size, angle and position.

Or improvise: push a bench, lay a plank on it, tape it down. Instant ramp.

Changed your mind? One key removes it. One more brings it back.

There are bugs. More physics to come. More game dynamics. More platforms. Race mode, badges and score tables are next.

I'm not a game developer. But with AI, storytelling, taste and the stamina to keep learning are enough to build great things. Without romanticism.

Comfort is the most dangerous place. It's where you think you've arrived and the learning slows down. I'd rather be where things move. Adapt. Learn. Inspire on the way.

A father-and-kids project became a new baby. A game we can give our kids. To play, to build, to discover the town where they go to school and, yes, have fun.

AI BUILDS ALONG. STORY, TASTE AND COURAGE MAKE IT GOOD.