Short answer: Yes.
Long answer:
As of right now this game is only available for Windows. You might be able to run it thru Wine for Linux. And on your Mac you could run it on a Virtual Machine.
I recommend VMWare Fusion do emulate a Windows installation on your Mac. But you could also use Parallels Desktop or BootCamp.
Community Support thread here: http://pokemon3d.net/threads/1315/
Long answer:
As of right now this game is only available for Windows. You might be able to run it thru Wine for Linux. And on your Mac you could run it on a Virtual Machine.
I recommend VMWare Fusion do emulate a Windows installation on your Mac. But you could also use Parallels Desktop or BootCamp.
Community Support thread here: http://pokemon3d.net/threads/1315/