If You Have More Than Two Games -- Pavel Kuzmin, Head of Upuapps.com at Unilead Network (The White Nights: Mobile Games Conference 2014 http://www.wnconf.com)
3. a couple of important figures
about app promotion…
4.
5. 2.25 Apps that display Apps other than your own for
purchase or promotion in a manner similar to or confusing
with the App Store will be rejected, unless designed for a
specific approved need or which provide significant added
value for a specific group of customers
3.10 Developers who attempt to manipulate or cheat the
user reviews or chart ranking in the App Store with fake or
paid reviews, or any other inappropriate methods will be
removed from the iOS Developer Program