The earliest game I remembered is me trying House of the Dead 1 while I was still a 4yo (idk when exactly, young enough to not understand click is to shoot), holy sh8 it gives me bad dreams back then and I don't even fucking dare to click or see the icon until years later.
"I don't accept that improvement has stopped coming towards me. Even if it will stop coming towards me, it's because improvement never even came to me anymore, while I always practiced at my best. That's not a stagnation that is supposed to happen, only fools would think that way."
I remember it almost clearly, it was Spyro the Dragon (the first one) on PS1. I played it almost all the time when I was young. Like, really young.
A bit of story: I remember that one day my PS1 fell on the floor (I don't remember exactly how). The console was fine, but the disk inside... not so much. If you guessed it, it was Spyro 1. And so I only had Spyro 2 & 3 while I had to wait for a new copy. I was so happy when I got it again, I played it until I finished the game. Even today, it remains my favorite game of all time.
Also some of the enemies in this game were scary at the time (I'm looking at you 3-1 Alpine Ridge, 3-2 High Caves, 4-2 Misty Bog and 5-1 Dark Passage).