This repo is intended for local development and offline tooling. It runs a browser-based Lemmings port with optional MIDI control and a standalone editor.
- Install Node.js 20+.
npm installnpm start- Open
http://127.0.0.1:8080 - Editor:
http://127.0.0.1:8080/editor.html - HTTPS test server:
npm run start-https, served athttps://127.0.0.1:8080.
Saved levels are stored in localStorage and appear after the default packs.
Use the Saved selector to pick them, or export/import .nxlv files.
Add ?e2e=1 to enable the E2E harness and window.__E2E__ API. See
docs/e2e-state.md for the full snapshot, buffer, and capture-rectangle
formats.
Use query parameters to jump to packs, toggle bench modes, or enable debug. The README includes the current list and shortcuts.