Fly Like a Bird is not Mac-Compatible, which simply means you have to download something to do it, or it simply won't work, depending on what computer you have. Though I am a fan of Macs, you're better off having a Mac and a Windows/Microsoft, for things you can't do on a mac...
Albatross
You should use something like wine to play Oblivion on a mac. You can find it very easy on google. That or just wait until Oblivion comes out for the Mac (if that ever happens).
Bird
Rise Of Nations is available for the Mac (See links below).
To play Crash Bandicoot on a Mac, you can use an emulator like OpenEmu or download the game through the official Activision website if it’s available for Mac. Alternatively, you can install Windows on your Mac using Boot Camp and purchase the game from platforms like Steam or Battle.net. Always ensure that you have the necessary permissions and licenses to play the game legally.
Get java for mac
Yes, you can play Spintires on a Mac.
Yes, you can play Spintires on a Mac.
If you have an Intel based mac install Windows in boot camp and then you can install DBO and play it on your mac
You Can Go Your Own Way, Fleetwood Mac
It is not that the mac cannot play certain games. It is that the games are not written to by played on a mac. The software developers choose not to write a version that is compatible with mac.
No you can't play any elder scrolls on mac