What is Reddit's opinion of Infinity Blade?
From 3.5 billion Reddit comments

➔ Infinity Blade website

By popularity on Reddit, this Service is:

#92 in Role-playing Game apps

1 review of this app found across Reddit:

They have the Unreal 3 engine running on iOS, one tech demo and one game support it.

Epic Citadel:

http://www.epicgames.com/technology/epic-citadel

Infinity Blade:

http://www.epicgames.com/infinityblade/