If a game shows an update, and you want to keep your game updated, it's worth updating the game.
A change of a file name or other very small adjustment is not going to see patch notes or a version number change.
If you don't want to update the game, you have that choice.
I would like to report one thing for Myst 4 Mac version, this game always overheated the Mac's CPU temperature to 100 Celsius degree which is very horrible for MacBook Pro users.
Please fix this issue for all Mac users ASAP : )
Much better to direct this post to Apple...;) IMO, whether running Windows or OS X, I cannot advise people to game on a laptop--they aren't designed for it--and even the ones that are (supposedly) "gaming laptops" do it poorly in comparison with a dedicated desktop. Frankly, though, I could not advise anyone for whom gaming is a *primary hobby* to do so on OS X or a Linux build, for a variety of sound reasons--IF gaming is something important to you.