Somehow in the iOS App Store, all 5 star raving reviews. Never seen that with an app in the store. Planned or payed reviews perhaps? No mention of any of the bugs, just absolute praise. Very odd to say the least.
A ten level platform shooter being branded as he most innovative game ever. You can tell from the wording of the reviews that they are all from the hardcore ION supporters.
There are "marketing services" that do fake app reviews by the truckload, from fiverr gigs to "agencies" with glitzy websites.
It looks likely that ionomy employs such a service for iOS, given the disproportionate number of reviews (Android has a far larger market share but ~80 Gravity reviews vs 100+ on iTunes) and positivism (5 stars vs 4). Bunch of random names posting random nonsense with 5 stars don't look like real users.
On the Android side it's a bit different, I think it is more difficult to get a fake account (phone verification etc). Still I suspect some of the uber-enthusiastic generic reviews are not quite kosher.