We are aware that OSX released a title named Quake.4.MAC-OSX in 2006. Now - that was a title bundled with the original crack and the old version of the game. Now, six years later it's re-released under app-store - it's the latest version and this time works like a charm. So yes - the versions now available on app-store are not the same that for some games were released in the past.
Quake 4 (version 1.4.3)
Now - Enjoy some Quake nostalgia!
2) Move to /Applications folder.
3) Enjoy this release!