Population: Growing! for the GC. Played them all except Wild World as I didn't have a DS for the longest time.
In October of 2006 I got Animal Crossing:Wild World!
It would have been somewhere around May of that year. My dad took me to get a new game and I remember seeing Animal Crossing (knew nothing about it) and I was contemplating getting it, but I also wanted a Spyro game and since I knew how to play Spyro, I got that game.