© 2026 Stop60 (Jacek Mariusz Taczała). All game code, graphics (generated in real time) and sound effects (synthesised with WebAudio in the browser) are original. No third-party audio or image assets.
3D library, vendored locally as three.module.min.js. MIT License – full text.
Oswald and IBM Plex Sans, SIL Open Font License 1.1 (served from the Stop60 site, see /THIRD-PARTY-NOTICES.md).
ISC License (header in count.js). Cookie-free visit/event counting; opt out with #toggle-goatcounter (stored as "skipgc").