Epic Games has announced earnings of over $10 million from Infinity Blade, the Unreal Engine 3-based iOS game from its subsidiary ChAIR Entertainment.
The figure was achieved within six months, with the iPhone and iPad game having been sold on the App Store for $5.99 for the duration.
"Infinity Blade's success proves that triple-A gaming experiences can be hugely successful on iOS and that there is a valuable, pent up demand for premium content like this," said Mark Rein, vice president and co-founder of Epic Games.
"We have been licensing Unreal Engine 3 very affordably to developers large and small for all kinds of games and applications and we're looking forward to our licensees achieving spectacular results of their own."
Epic also claims that installations of its Unreal Development Kit (UDK) middleware toolset have doubled in the half-year since the debut of iOS support. Since December 2010, the number of unique installations have shot from 400,000 to 800,000.
Epic offers various different licensing models for UDK, including a free one for hobbyists. For commercial use, there is the option to pay a $99 annual fee, then 25 per cent of all received royalties in excess of $50,000.