Looks like most positive reviews for Gravity are posted by friends & family and then some by "professional" reviewers with "borrowed" photos - I'm guessing ionomy employed one of those app promotion services that posts fake reviews to boost ratings:


Out of 35 reviews (not sure why it says 57 on the page, perhaps there are some ratings without reviews):
- 10 or more positive posted by familiar names from slack
- 3 or more positive by their family members
- 7 positive by paid shills
- 5 positive by "Google User"
- 5 negative
So perhaps somewhere between 0 and 5 positive reviews are actually attributable to a real non-bag-holding person who played the game and liked it.
https://play.google.com/store/apps/details?id=com.ionomy.gravity