I don't know: I've been playing Zero Hour for more than a year, and I used to be totally addicted. It worked absolutely perfectly., and if i could give it 6 stars, I would. But lately it's been crashing on me, and more and more often (the heavy kind of crash with full freeze and hard reboot).
Even after quitting all other apps, repairing permissions, running DiskWarrior, reinstalling, running from another system etc...
The support team at Aspyr was quick to respond, but they couldn't do much: they advised me to delete some files that may have become corrupted. Which I did. But it's still crashing. As a matter of fact, it has become impossible to play: the game's just gone.
Since the problem started a few weeks ago, could it be that the file corruption is caused by Tiger 10.4.5 or one of the Security Updates?
An incredibly sad story. I honestely can't recommend Zero Hour until this crashing issue's solved.