To play the game, simply launch the Google Maps app, tap the menu icon in the top-left corner of the interface, then select Play Snake.
Pick which city you'd like to play in – options include Cairo, London, San Francisco, São Paulo, Sydney and Tokyo – and then start picking up as many passengers as you can without bumping into yourself or falling off the map.
Snake rolls out on Android and iOS today, and Google says it will be available to play in the app for about a week. A standalone site has also been set up for anyone who wants to feed their Snake addiction beyond that time.
Google Maps can be downloaded from the App Store for free. [Direct Link]