As an 80's baby who was introduced to Atari as a child while others had the NES the term Retro is a nostalgic remembrance of a time when games took quarters in the arcade and you only started w🅘ith three lives. As I🌳'm still a gamer now in my early 40's the term retro still brings to mind the 32bit, 16bit and 8bit games of yesteryear. I don't think it's about being older than 10 years but rather on a format that is no longer at the peak of its technological life.