I'll go up to #6 already because I have a lot of work to do in the next few weeks for my exams.
#12
Hint 1: A ghost haunts a mysterious village.
Hint 2: It's not the first game released in the series, but story-wise it comes first.
Hint 3: A flute.
Hint 4: There's a user on this site who's name and avy are both the main character of the franchise this game belongs to.
#11
Hint 1: Easter Island is one of the places you visit.
Hint 2: The desert is another place you visit.
Hint 3: You also visit the ocean.
Hint 4: And Japan too.
#10
Hint 1: Notoriously hard cow.
Hint 2: Let Kurt take care of your balls.
#9
Hint 1: Automatic levels.
Hint 2: 100 *** challenge.
#8
Hint 1: Cartoony.
#7
Hint 1: Extreme snowboarding.
#6:
Hint 1: Drive upside down.
