Not sure if the devs of Adventures with Pip made some kind of change on their end with Game Center, but the game finally works without having to log off of GC.
I'd still advise staying away anyway until the controls are tweaked. I'd imagine it's very difficult on an iPhone, particularly when I still clobber myself on a Mini 2.
There's quite a ruckus over at TA regarding the price increase from the early adopter sale for $4.99 to its full $14.99 price. I'm all for premium games, but I am worried for the dev on this one. With more high profile ports like Transistor and Don't Starve selling for $9.99 and $4.99 respectively, this game could get the short end of the stick.
Not that the game isn't worth $15, but just being realistic. I hate to see any dev, especially one selling premium games, fail.