At long last, I've posted a release candidate for Lucky's Puzzle Carnival. It's available from the test page at http://www.orbitalcows.com/lpc/lpctest.php
I just want to make sure people can get it to run before I start selling the game. If you have integrated graphics, the game most likely won't work well. I set the video card requirement at "32 MB video card", though the only integrated graphics I've tested on were Intel GMA graphics (the worst integrated graphics anywhere).
It's available for both Windows XP/Vista and Mac OS X 10.4+. The Mac version should
work on Linux (see readme.txt), but I haven't tested it personally.
In particular, I was hoping someone could test it on Windows Vista and/or Mac OS X 10.5. I have access to neither of these operating systems right now. I have tested it on Windows XP and Mac OS X 10.4.