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Infinity Blade is to the iPad what the Halo series is to the Xbox 360 (or the Gran Turismo franchise to the PlayStation 3). That is, a killer game – a title so compelling that not only does it showcases what’s possible on a platform, but is also so impressive that folks go out and buy the hardware just to be able to play that particular game. A killer title for iPad gamers has to be Chair Entertainment’s Infinity Blade.

Classed as the first iOS game to run on the Unreal Engine, Infinity Blade went on to become the fastest-grossing app in the history of iOS, selling $1.6 million in four days. Three major updates later, Chair Entertainment launches Infinity Blade 2, a sequel to the elegiac action masterpiece. Here’s the blurb:

Expect forty new locations (up from ten in the original title), many new hit points, weapons and spells, plus a bunch of other nuances and nice-to-haves. Chair is already thinking post-launch, teasing an update with the Clash Mobs feature where a bunch of other players attack a monster with millions of hit points. In case you were wondering, IGN gave Infinity Blade 2 a 10. A cornerstone of the sequel is, of course, graphics.

[slideshow] The game features console-quality lighting effects.

The game runs fine on the original iPad, iPhone 3GS, iPhone 4 and third- and fourth-generation iPod touch. However, you’ll want to enjoy it on your iPad 2 or iPhone 4S due to optimizations that really push the envelope of what’s possible on Apple’s A5 chip, especially in the lighting and shading department. Make no mistake, this is one game that you’ll want to show off to your Android-toting friends.

More information is available at the official site. The game hit the New Zealand App Store this morning. You should expect it in the U.S. store around 11pm Eastern time tonight at this URL, priced at $9.99 (a 941MB universal binary download). To celebrate the launch of Infinity Blade 2, Chair slashed the original Infinity Blade to just six bucks for a limited time. Release notes and more clips after the break, including Donald Mustard (creative director), Adam Ford (artistic director) and Geremy Mustard (technical director) talking the visuals.

More videos below:

[youtube=http://www.youtube.com/watch?v=Xs5ddFlc5Tw] [youtube=http://www.youtube.com/watch?v=uWrSbyVO4dE] [youtube=http://www.youtube.com/watch?v=lHE6IYKhIUE]