The official GPH SDK is now online in Korea. It's available for Windows and Linux and an English documentation is included. As it's not announced for use outside Korea I uploaded it to my server and not the archive. 
Proceed with caution...
Homepage (Korean): Here.
Download Mirror: Linux.
Download Mirror: Windows.
				
			Proceed with caution...
Homepage (Korean): Here.
Download Mirror: Linux.
Download Mirror: Windows.
 
	
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		