About
Pong is Atari's 1972 arcade sports game, created by Allan Alcorn as a training exercise for co-founder Nolan Bushnell and credited with helping launch the commercial video game industry. Pong in a Favicon renders a complete, physics-based Pong match — including spin and a beatable AI — inside the 32×32 pixel browser tab favicon, redrawing it as a PNG every frame while the score appears in the tab title. The same engine also runs headless from the command line and as terminal ASCII art.
How it differs from the original
Instead of a full on-page canvas, the game plays entirely inside the browser tab icon (with a mobile-friendly tab-preview fallback), controlled by scrolling rather than dedicated paddle keys, and the same core engine can also be driven from a text-only command-line interface.
Getting started
On desktop, scroll the page up and down to move your paddle and watch the tab icon for the game; on mobile, where tab icons aren't shown, swipe on the small on-page preview instead. The same engine can also be played from a terminal via the included command-line tools.