Well known members who know better, too. If you just updated, I suggest you delete. And contact the developer. It's...insane. More insane than Prismadrop.
Seems like something's up with Game Center. This (obviously) isn't the first time something like this happened.
Same here, got 20 challenges today and I sent at least one challenge myself. Sorry to my gc-friends. App deleted
No. I don't have the game and still get them. In fact, if you click on the challenge, it brings you to the iTunes page to download. So this is basically a way for the dev to spam the app to get more downloads.
I wonder if I turned off some setting in Game Center... I haven't received anything! Though it sounds like that's a good thing.