JewelToy is a simple game played against the clock.
Note from developer:
"It was Easter and the kids were home so I thought I'd give my work on my other projects a break and do something else.
I knocked this up for fun and learned some important lessons about using custom subclasses of NSView and internationalization at the same time.
It took me about a week to go from idea to version 1.0.0, including some tricksy debugging and designing all the graphics for the game. I'm sure I couldn't have done this as quickly using anything other than Apple's Cocoa IDE."