Vlambeer specializes in twitchy, arcade-style games that get really hairy (while remaining plenty fun) in a hurry—like iOS greats Super Crate Box and Ridiculous Fishing—and its latest Mac entry, Luftrausers, certainly maintains that philosophy. You'll pilot a tiny plane as enemy craft and carriers launch a barrage of gunfire, zipping about and laying waste to foes while trying to maintain a score-boosting combo streak. And much as the combat itself proves entertaining, it's matched well by an awesome customization system that allows you to swap various parts to create the fighter of your dreams.
It's difficult to describe the premise of Papers, Please without making it seem crushingly dull; in some ways, it is. Manning a tiny office, your job is to slowly process a huge line of travelers at the newly opened border of a fictional Eastern Bloc country, checking their papers for discrepancies and rejecting or accepting them depending on whether everything's in order. You're paid by the number of visitors you admit during the few minutes you're open, but make too many mistakes (or "mistakes," whether they're to help someone unfortunate or earn yourself a few easy credits), and you'll be fined — which, given your hand-to-mouth existence, could spell the difference between life and death for your family at home.
Back when new desktop operating systems used to cost $129, the Mac Up-to-Date Program was a lengthy, tedious process involving faxes, stamps, tracking numbers and lots of waiting. With the launch of Mac App Store delivery with Lion, Apple eliminated much of the hand-wringing (and value) about the program, boiling it down to an online form and iTunes redemption code.