Odds are that you already know what Infinity Blade is, and you might already have it on your iOS devices, too. But just in case you don't, we're spotlighting one of the best iOS games of last year, which happens to be available on the App Store right now for the sale price of US$2.99 -- for this game, that's a steal. If you haven't picked up this big-budget example of how experienced developers can do iOS games right, today's your chance. The game's already received one content update, and another big update is coming soon.
Even if you already have Infinity Blade, you can check out Joystiq's fine writeup of how the game was made, straight from the floor of GDC 2011. Chair Entertainment talks about how they had tons of game ideas (from a physics puzzler to a card game -- I'd like to play either of those), but eventually boiled down what worked on a platform like the iPhone to what they came up with in Infinity Blade. It's a great game at a great price, so definitely grab it as quickly as you can.