About 2 weeks ago, Infinite Dreams came out with their 3rd Mac game called Jelly Defense. But here's the amazing thing: it's just recently topped Angry Birds on the Mac App Store!! At number 10 on the top paid apps on the App Store, it's currently the top selling game (there's now about 7500 apps total on the store).
Anyway, Jelly Defense is some kind of tower defense-style game, which the user reviews on the App Store say is funny and fun to play. Here's the official trailer using claymation (and there's some gameplay shown toward the end):
BTW, I'm not sure if this game should be here under Arcade, or in the Action section, or even the Strategy section. Feel free to move to the appropriate spot.