This is one of the most amazing pieces of freeware that I've run across in ages. It's not for everyone but I think that for those of you that like it, will like it a lot.

You can download it here for both pc and mac osx.

Thanks for the link. Looks like it is down now, but I'll try it again later. What type of software is it?

The working direct link is http://hcsoftware.sourceforge.net/passage

thanks for the correct link. I'm not sure what happened.

very interesting concept, i could not figure out what the hell i was supposed to do for a while

i didnt see if it was vista compatible....i see it says Xp though.

I'm playing the Windows.exe version on Vista at present, no obvious problem.