Infinity Blade 3 will launch on September 20, right with the iPhone 5S, Chair co-founder Donald Mustard revealed during Apple's conference today. Infinity Blade 3 is the conclusion of the series.

Players will embody two characters in eight worlds, each of which is bigger than the entire first game, Mustard said. We got the first look at Infinity Blade 3 on Engadget's Apple liveblog.

Infinity Blade: Dungeons, a dungeon-crawling iteration in the series, was canceled this year when developer Impossible Studios was shut down. Sales of Infinity Blade 2, which launched in December 2011, hit 50 million units in July 2013.

This article was originally published on Joystiq.