Projects

Featured

• 

  Virtual Puppet Theater 2026

  Your hand and voice drive one puppet; Claude improvises the other. Won “Most Creative Opus 4.7” at Anthropic's Built with Opus 4.7 hackathon and was shown at Code with Claude in London.

  TypeScriptthree.jsMediaPipeWeb Speech APIClaude API

  Demo videoSource

• WebAssembly by hand 2017

  Cookbook examples of hand-written WebAssembly. Somehow my most-starred repo.

  WebAssemblyWAT

  Source

• lua2wasm 2026

  A Lua-to-WebAssembly compiler with a browser playground.

  CWebAssemblyLua

  PlaygroundSource

• Blobs and Bullets 2020

  A co-op twin-stick shooter, written to learn Rust and WebAssembly.

  RustWebAssemblyweb-sys

  Write-upSource

Games, 2004–2023

Game jams are how I practise shipping: a theme, a deadline, and whatever I can finish in time.

1. 2023

   Barbenheim 13 js13k

   A tactical RPG in 13 kB. As usual I ran out of time, so the story line is weak.

   PlaySource

2. 2017

   Lost Marbles js13k

   A puzzle game.

   PlaySource

3. 2017

   NamCap Side project

   A Pac-Man clone in TypeScript and WebGL.

   Video

4. 2015

   Galactic Backfire js13k

   A space shooter that runs in reverse.

   PlayRetrospectiveSource

5. 2014

   Buddinge Ludum Dare 30

   Team entry from the Open Space Aarhus hackerspace. My first TypeScript project.

   PlaySource

6. 2014

   Monstruous Times 7-Day Roguelike

   A roguelike made in a week.

   Source

7. 2014

   Enter the Penguin Flappy Jam

   A flappy game, with a penguin.

   Play

8. 2004

   The Newcastle Chicken Slaughter Ludum Dare 3

   Stop a disease spreading from a chicken farm. Yes, the title is accurate. Java and OpenGL, in 48 hours.

   Devlog

Teaching & talks

• webcafe.dk (1998–2006). A non-profit, ad-free Danish web development site I ran with fellow students. I wrote its Java series, from first applets to double-buffered animation. Archived site
• Processing workshops (2011). Four evenings at Open Space Aarhus, teaching complete beginners to program through graphics. Material · Sketches
• Writing React with TypeScript (2017). A talk at the Aarhus ReactJS Meetup on why we chose TypeScript and how well it works with React. Event