Score: 8
"I hope I'm not dating myself..."
date: August 22, 2006
...but I've seen that game and subsequent variants since the Commodore PET in the 1970s. It was called "Snake" then too. I got it up to a point where the entire screen was filled with the snake, where it was just chasing it's tail.
So this is well before gameboy or the 90's, but a fun game is a fun game.