Both have compatibility issues, the Retro Duo has a more desirable scope of compatible software including Castlevania III.
Here's our official thread on the Duo.
http://www.digitpress.com/forum/showthread.php?t=114088

Both have compatibility issues, the Retro Duo has a more desirable scope of compatible software including Castlevania III.
Here's our official thread on the Duo.
http://www.digitpress.com/forum/showthread.php?t=114088
"And the book says: 'We may be through with the past, but the past ain't through with us.'"