what is your favorite game series and why?

FNaF!!! Isn't it obvious? I AM in the game!

Final Fantasy- I like the stories
Harvest Moon- I like the freestyle gaming
Rune Factory- I like the monsters
Pokémon- I like Pokémon
Professor Layton- I like the problem solving

I like Portal. I like the characters and the concept.

i have many, sly cooper, spyro, mario, ect...
but out of all these i have to choose sly cooper