The second program I ever wrote with REALbasic. A simple but satisfying game: you have to click on "moles" as they pop up from the ground. Shows smooth animation of color graphics, and use of sounds; it was very easy to write, thanks to Timers, multiple instantiations of a single custom class, and other cool REALbasic features; only about 80 lines of code, and presto, I had myself a working game that has kept me happily clicking away for hours! (But of course, I'm rather easily amused.)
matt neuburg, phd = matt@tidbits.com, http://www.tidbits.com/matt