I haven't purchased any game on mobile but I usually pay for certain car upgrades when I play asphalt 9 and also paid for new skins and weapons on fortnite.
The very first pokemon I played still remains my favorite pokemon game , I played pokemon red and blue way back on the Gameboy Pocket version and I still can't forget the experience.
The PlayStation 2 console made most of my childhood memories around video games, the PlayStation 2 was the first play station console I played video games on and it still remains my favorite console.
I have been playing fighter games for several years since I started playing mortal Kombat and street fighter on PC before I got my first PlayStation 2 console and continued playing fighter games on the platform.
I have done that a few times, I bought stray on the day it was released but on other times it's maybe after a few weeks or Maybe Months after it was released.
Sometimes after a gameplay I usually get flashbacks of the video game I just completed or still playing and this is among reasons I normally go back to play again.