Mr Crab 2 is... as good as the first one platforming wise... but with more things on it... like curved shapes, more bounciness, more springs, bigger wow factor... it also has a full game unlock that gives all levels (so far, 42 levels), and a prize machine that gives hats, glasses, and a lot of stuff to customize your crab... you can also unlock different crabs and other animals to play with, all with their customization options, and you unlock this animals by recuing their children in-game. Mr Crab 2 lacks revives, continues, timers and all that BS that plagues all the F2P games nowadays, in fact, it seems like a real game but with the option to give them money as IAP. Prize machine works with either stars of watching ads. I like it.
... And now, to install iOS Beta 9.3.2 and see the GameCenter bug by myself... I will give impressions here about it...
If any of you is interested, you can do the same here:
https://beta.apple.com/sp/betaprogram/welcome