According to Wikipedia, the term nostalgia describes a sentimentality for the past, typically for a period or place with happy personal associations.
For me, thinking of the game Snake on a old (mostly borrowed – I was too young to own a phone), Nokia 3310. That phone is the absolute classic, released in 2000. Nokia, by the way, was recently bought by Microsoft (and loses billions of dollars per year!).
Anyways, now, the Snake game has returned in 2 player form. You can and should try it here: Snake Duel.