It involved heaps of proprietary hardware and software, months of QAtesting, incompatibilities across regions and languages, and MSRP bumps that most consumers found unconscionable.
While Epic's Unreal Engine 3 has supported Android for some time, the release of the internal app means, "we've invested in plenty of QAtesting against a wide range of devices, and we've executed the necessary profiling required for shipping Android games, " an Epic Games rep tells us.