Tags your runs on the scoreboard — optional.
In Safari on your iPhone or iPad:

In another browser? Open this page in Safari first — on iOS only Safari can add games to the home screen.
In Chrome on Android:

Other Android browsers have the same option in their menu.
Samsung Internet's install currently trips a Google Play Protect warning (“Unsafe app blocked”). For a warning-free install, use Chrome:

Prefer to stay here? Installing from Samsung Internet still works — the warning is about Samsung's install wrapper, not the game. Tap Install anyway on it.
The game then launches full-screen from its own icon — and keeps working offline.
Maneuver from the center lane into the green pocket. Park straight and centered, avoid the other cars, and keep your reversals to a minimum for the top score. Double-tap the gas for Drive, double-tap the brake for Reverse.
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