Changes made for this site (original: https://github.com/mnito/factors-game @ aba7558f6aab203a2cc991ac4ae6da2439ef9aaa)
- Copied only runtime files (index.html, factors-game-full.min.js, favicon.png) plus the original LICENSE.
- index.html: removed the Open Graph / Twitter meta tags (they pointed to the author's hosted copy),
  the page header, the explanatory text and links below the game, and the footer, so the canvas fills
  the whole frame. The author credit and copyright line are kept as a comment in index.html, and the
  copyright header in factors-game-full.min.js is unchanged.
- The canvas is now sized to the full window height (originally 80% of it) and the page no longer scrolls.
- Page title shortened to "Factors Game".
No game logic was changed.