I have "Ouchi Mainichi Tamagotchi" for my Japanese pearl pink 3DS and it was really fun! You get to start your very own dream dollhouse and play with a lot of Tamagotchi dolls that come to life. You get Gotchi when playing mini-games (each room has a mini-game), going fishing in your very own pond, and more! Gotchi is used to buy more Tamagotchi dolls, furniture, wallpapers, and floors. Oh, and even colors you use to decorate your dollhouse!