Mine was Animal Crossing For the GameCube, since apparently the "Population: Growing!" Part isn't apart of it's title.
I got it for my birthday a long time ago. like when I was about 7. I started to play it and got into it. (Not as much as Wild World and City Folk)
I had a japanese e+ game but I didn't have the right console so I never played it- it now sits in my bedroom with my other animal crossing games (gamecube, ds, wii and soon new leaf).
I remember borrowing the first Animal Crossing from a friend a while back, I got really into that game, and remember borrowing it for almost a year. Although the one I played most was Wild World, I played that for years. Never really got into City Folk, although I do have it. Personally I think Animal Crossing is perfect for handhelds.
Oh man, the first one I played was the Gamecube Animal Crossing with my really close friend (pretty much my sister) when we were little. It wasn't my game nor my Gamecube but she lived with me so it was basically ours because we played it together religiously. That game was what made me beg my aunt for a Gamecube and that game and ever since then I've been obsessed with it! ahhhhhhhhh, I'm feeling really nostalgic now.
My first AC game was Wild World! I had seen friends of my play Animal Crossing on the Gamecube once and I thought it looked really cute and fun, but I didn't own a Gamecube. So I eventually forgot about it, until I randomly found Animal Crossing Wild World one day. :3
Wild World.
I had a GameCube way before I got a DS, but at that time I was obsessed with Pokemon Colosseum/XD and didn't know what the heck Animal Crossing was.