The earliest I remember is playing Quake II on my dad's lap, when i was four or three. He did the walking and I did the shooting, as I had not really developed the skills to use both yet. How does two players controlling a single character shooter game work? It was not exactly a smooth experience, but God Mode made it a fun time and a great memory.
Back when I was little, I used to play games on the PS1. It's just that the game is not as popular as it is now. The game is METAL SLUG, and there are several versions. The unique animation and the way it works made me happy, plus lots of challenges.