The first Pokemon game I played was my brother's Red Version on his Yellow Game Boy Color. He was like 3 at the time, he couldn't play it on his own. Lv 77 Blastoise against the Elite Four... Not so good results. Restarted and actually trained an entire team lol. Then he got Yellow, played it, and I kept Red and played it on my Lime Green GBC I got.
But Silver will always be my favorite. That game was practically glued to my hand all of the time. Got it the first Christmas is was out. Now own at least one Pokemon game from every series, except for a Pokemon Ranger game or the new Mystery Dungeons.