"Aspyr's rights to sell Neverwinter Nights 2 have recently expired, but Aspyr remains committed to supporting customers who have purchased Neverwinter Nights 2. If you purchased the game from Apple's Mac App Store we suggest you back up the game to an external hard-drive or similar device before you reformat your computer or otherwise delete the game. Neverwinter Nights 2 will not be available for re-download from the Mac App Store per Apple's terms and conditions. If you experience any issues please do not hesitate to reach out to our customer support team. We can help you."