You might have played Snake Game on you old monochrome phones, There are many other versions released later , even for color displays and Phones. Snake game was the most popular Mobile game of the year 2004-2008. Anyhow Snake game is the most traditional and oldest popular Long living Game.
Do you know that you can play Snake game inside YouTube video player?
It sounds funny, But true.
Open any video in YouTube and when it starts streaming the video , Press and hold your Left mouse button and press left Arrow and Up arrow on your keyboard together.
i.e. Left Mouse click+Left arrow+Up arrow.