I am currently playing Pikmin Bloom, it is a walking game. Unfortunately it does not pair with Garmin Connect. It does pair with Googlefit... But Googlefit only counts my steps if I have my phone in my hand. That being said, I don't often have my phone in my hand so the step count on the game is way less than my normal step count.
I think it would be fantastic if you could add a pairing connection to either Pikmin Bloom or Googlefit.