Just over a year after the debut of Infinity Blade and a month following the launch of Infinity Blade 2, Epic Games has crossed the $30 million mark in revenue from its iOS game franchise. Epic made the milestone official in a press release today, where it also notes that the $6.99 Infinity Blade 2 has brought in net earnings of over $5 million in its first month on the App Store, eclipsing that mark in a third of the time taken by the original game, which still costs $5.99. Compatible with iPhones, iPod touches, and iPads, the Infinity Blade series was the first to show the power of the Unreal Engine 3 on mobile devices, with graphics that were only rivalled by Id Software's Rage. The unbridled success of both Epic and Id's titles shows there's a great hunger for higher-quality graphics in mobile games, one that gamers are evidently willing to pay dearly (by mobile standards) to satisfy. Mind you, neither Infinity Blade nor Rage can be accused of having excessive narrative depth, so perhaps the next stage in the mobile gaming evolution can be to have a storyline to go along with the pretty visuals?