Originally created for Sony's handheld, and starring Barry Steakfries (the guy who's running around in Monster Dash, which this game has more or less been made into a sequel for), Age of Zombies is a dual stick shooter with the same old Halfbrick polish and a cool pixelated aesthetic. The action is fast but still friendly. You blast your way across five different worlds thanks to solid controls, a few witty lines from Steakfries and his dialogue, and a few weapons and power-ups to find on the way. Both Game Center and OpenFeint integration is included as well, along with a survival mode and a few other extras.
The game is US$2.99 right now as a universal app. It's an excellent game -- maybe a little casual for most dual stick fans, but if you're a big fan of Fruit Ninja and/or Monster Dash, this one is right up your alley. I'm excited to see even more from Halfbrick Studios in the future -- it certainly seems like they're doing very well on the iPhone.