The Pokémon game that got me into this series would have to be Blue version.
I used to be huge fan of Pokémon back when I was a little kid, and would watch the anime almost every single day. Then, I had eventually figured out that they also had their games, which was available for Game Boy and whatnot. I really wanted to get my hands on a copy afterward (didn't have to worry about the console, as I already had Game Boy Color). Few days before Christmas, dad had told me to make a wishlist of what kind of things I would want. Then, when it was time to open presents, I finally got a hold of the game.
I was definitely excited when I'd first opened its box; I couldn't wait to play. When I did begin playing, I wasn't able to put it down at all, regardless of how tough I tried; I was super-addicted. From there, I began to grow much bigger love for the franchise, and haven't stopped following their video game series ever since.