core by Hakim El Hattab. Source: https://github.com/hakimel/Core/tree/bf80e12fc595debcac2e12821847d0bdc869c3d2
Pinned revision: bf80e12fc595debcac2e12821847d0bdc869c3d2
MIT notices retained. HTML-only edits remove upstream analytics, social embeds, donation loaders and remote font requests. Game JavaScript, visual assets and game logic are unchanged. This is an independent licensed copy, not the creator's official host.