If all else fails, I second an earlier poster who suggested watching some of Spammals' Titanic game videos ( ). Is there maybe there's some sort of program you can use to run it on your Mac? Like a virtual machine or something like Wine? Titanic: Honor and Glory has a demo ( ), but skimming over the page, I don't see where it's compatible with Mac. If you're looking for a way to play that's less of a questionable grey area and you're able to use Steam on Mac (and if the game itself is compatible), it looks like they sell it for $5.99.
Not sure if it's technically legal/moral/etc, but I'll let you decide that sort of thing for yourself.
With that being said, I know this website has where you can play Adventure Out of Time in your browser. Let me first preface my post by saying that I know absolutely nothing about Mac, so I'm really sorry in advance if none of my suggestions will work for you, I just wanted to at least try to help.