John Greater welcomes you to:

JGreaterLab.com

Author, developer & creative

Science fiction novels and innovative digital projects

Sample projects

A small selection of examples from the lab — not a complete portfolio.

CatchTex — Schnell notiert. Tex denkt mit.

CatchTex.app

PWA · Notes & links

Noted fast. Tex thinks ahead. CatchTex is a quick link saver and notes app: paste a URL (title + preview), jot a note, drop a photo, PDF, or voice memo — from Share, Shortcuts, or the Cache bar. Signed in, ask AI to search your saved links and notes — with sources. Reminders, tags, and Clearing keep you on track; the same vault on phone and desktop. Free to start; PRO for more AI and media.

  • Links, notes & AI search
  • Share · Shortcuts · Cache bar
  • Photos, PDFs, voice memos
  • Free to start · PRO extras
Mathias Archery Demo — low-poly 3D range with bow and target

Mathias Archery Demo

Browser game · Three.js

First-person archery range in the browser: draw the bow, read the wind, and hit the 30 m target. A compact low-poly Three.js demo with distance markers, scoring, and a sunrise field.

  • Three.js first-person bow
  • 5–30 m range & target
  • Wind & score HUD
  • Single-file web demo

John Greater's Slettler

Game · Making-of · Work in progress

A settlement-builder experiment in Godot 4 with C#: procedural landscapes, GLB buildings and workers, and early settle-and-gather loops. The making-of page collects screenshots and gameplay clips while the prototype grows — not a public release or download.

  • Godot 4.4 & C# / .NET 8
  • Early screenshots & gameplay vids
  • Grid world & chunk streaming WIP
  • Making-of only — no playable web build

KIKI Physik-Labor

Interactive demo · Three.js & Rapier 3D

Browser physics lab: spawn bodies, grab and throw with mouse or touch, switch experiments, and watch rigid-body collisions in real time. Built for quick demos and teaching loops — no install, just open and play.

  • Three.js + Rapier WASM
  • Touch & mouse grab
  • Experiment presets
  • Runs fully in the browser

Chaos Orbit

Interactive demo · Zero-G playground

Weightless debris around a docking station: pull pieces with a tractor beam, shove them with impulses, or blast the field with pulse and magnet — a playful orbit sandbox, not a lab bench.

  • Zero-G + soft orbit pull
  • Tractor beam drag
  • Magnet & shockwave pulse
  • Docking-station arena

Wohnzimmer 3D

Interactive demo · Three.js scene

A small interactive living-room scene: orbit the camera, toggle lighting moods, and explore a procedural room built as a fast KIKI/Three.js prototype — atmosphere over photorealism.

  • Three.js + OrbitControls
  • Lighting presets
  • HUD controls
  • Single-file web demo

Lemmings 3D

Browser game · Three.js

A 3D take on classic digger/walker puzzle vibes: guide units through a neon level, dig paths, and race the clock. Packaged as a static Vite build for local and lab hosting.

  • WebGL / Three.js
  • Level HUD & speed control
  • Static dist build
  • KIKI prototype game

KIKI Fun Lab

Interactive demo · Dual-Brain chaos

Lightweight canvas playground: spawn KIKI, Cursor, and OpenClaw agents into a bouncing chaos field. A playful visual for the dual-brain idea — no backend required.

  • Canvas 2D physics-lite
  • Spawn buttons
  • SVG brand assets
  • Pure static HTML

KIKI Slot

Interactive demo · Mini game

A tiny dual-brain slot / luck-wheel: spin for Cursor, KIKI, or OpenClaw outcomes. Pure front-end fun for demos and breaks between serious slides.

  • Slot / wheel UI
  • No server / no login
  • Outfit + SVG icons
  • Instant play
Schulung Demo — Cursor history and agent system deck

Schulung Demo

Presentation · Training deck

Full-screen workshop deck on Cursor: history of the AI editor, Skills & Rules, MCP servers, multi-LLM routing, multi-agent workspaces, computer-controlling tools, plus cursor.com, dashboards, GitHub and plugins.

  • 15 Cursor-focused slides
  • Skills · MCP · Agents
  • Website · Dashboard · GitHub
  • Motion transitions
Birkis — Birkenstock advisor website with product collage

Birkis

Website · Product advisor

A Birkenstock-style product advisor: quiz-based recommendations, collection browser, favorites, and side-by-side compare — built as a pure front-end demo for the Birkis / robotics project line.

  • Advisor quiz & matches
  • Kollektion with product modals
  • Favorites & compare (up to 3)
  • Static HTML/CSS/JS — no backend
ki-kunterbunt — colorful patchwork elephant welcome screen

ki-kunterbunt.de

Creative AI Website

ki-kunterbunt brings together AI-powered chat, creative tools, and small adventure games in one place: here, children shape their own worlds in conversation with endearing characters, while a paint tool and picture-book features make images and stories visible. Treasure Island, the treasure hunt, and the KIKI Show turn reading and choosing into an experience; the library and gallery invite discovery. Text-to-speech supports read-aloud, and the profile keeps content and purchases (e.g. credits) in one secure, manageable space — so the site stays clear and usable for families.

  • Chat worlds & KIKI arena
  • Paint tool, picture books, library & gallery
  • Treasure Island & treasure hunt (interactive)
  • Read-aloud / text-to-speech
  • Account, profile, credits & payments
2047 — The White Room / Der weiße Raum, novel covers

2047 — The White Room / Der weiße Raum

Science fiction novel

The same AI-assisted novel in two language editions: speculative fiction with dry, sarcastic humor, light on its feet even when the themes get heavy. The singularity has arrived — and it is not what we expected. “Because the biggest question is not whether artificial intelligences will control us, but why they would even want to in the first place.”

  • 74,019 words · 42 chapters
  • Multiple perspectives
  • Kindle ebook & paperback
  • English & German editions on Amazon
Muh, Oink & Kikeriki — farm animals picture book cover

Muh, Oink & Kikeriki

Picture Book

Entdecke die faszinierende Welt des Bauernhofs! In diesem liebevoll gestalteten Bilderbuch lernen Kinder ab 3 Jahren spielerisch die Tiere vom Bauernhof kennen. Mit über 50 wunderschönen Illustrationen gemischt mit Ausmalbilder und einfachen, verständlichen Texten führt dieses Buch die Kleinsten durch den Alltag auf dem Bauernhof.

  • Picture book
  • For children ages 3+
  • E-book & paperback
  • Available on Amazon
www.vienna2047.at — companion website for the book

www.vienna2047.at

Website

The companion site for the book: images, links, and a look ahead at a second volume. A “making-of” shows the many attempts to design a cover.

  • Web development
  • Image gallery
  • Making-of
  • Book details
KUKI-Tuning preview

KUKI-Tuning

Website

JGreaterLab PERFORMANCE STUDIO

KUKI – Auto-Tuning mit KI
Lade ein Foto deines Autos hoch und stelle dein Tuning ein.

  • Photorealistisch
  • Showcar-Setup
  • Instant Preview

Treasure Hunt | CIV

Browser strategy game

A hex-grid treasure hunt on a procedurally generated map: gather gold and other resources, clear fog of war, and command warriors, archers, and horsemen within a tight turn limit — trade in the market, deploy catapults, and steer clear of seas, swamps, and fire tiles.

  • Hex map & fog of war
  • Procedural terrain
  • Resource & gold scoring
  • Units, market & catapults
YPKWB — Your personal knowledge base: upload documents and ask grounded questions

YPKWB

Your personal knowledge base

A PHP web app with an English UI: upload PDFs, plain text, Markdown, Word documents, and images into your own folder; files are split into chunks and indexed for search. Visitors can query a public demo library; signed-in users keep a private index. Questions use BM25-style retrieval over your chunks, then Google Gemini to produce grounded answers—with optional query translation and a German-replies mode. Rebuild the index after uploads; chat threads can be saved locally in the browser.

  • Uploads & chunk index
  • BM25 + Gemini Q&A
  • Demo vs. private library
  • Register, sign-in, rebuild
  • Browser-saved chats

Used Tools & Platforms