I got my Nintendo 3ds and Tomodachi Life (a game) for Christmas and I love it! I had wanted Tomodachi Life for ages and finally, I received it, and that wait was DEFINITELY worth it!
Tomodachi Life is basically a real life game. You make miis, the characters (whom you know in real life, e.g. your family, friends, nemesis and boyfriends), then you pick their personality, pitch of talking, catchphrases, looks and I could go on.
My miis are: my friends at school, my family, my family's friends and my enemy. The game is really funny as they don't acknowledge age, so your sister's friend could fall in love with your dad or maybe your brother will want to be friends with your aunt! It really is hilarious to watch as they grow and develop.
And if you can't get the game then check out their website: https://www.nintendo.co.uk/Games/Nintendo-3DS/Tomodachi-Life-871968.html
and take the personality test.
Overall, this game gets a thumbs-up from me. Fun and funny, quirky and silly, perfect for boys and girls from 8 upwards.