The developer of the SNES8X emulator has now ported the Visual Boy Advanced Emulator to Windows Phone 8.
The app features full audio support and supports both portrait and landscape mode, and imports ROMs via SkyDrive, with many ROMs available here.
The games look great in the app, and the sound is pretty good, if often scratchy. The app comes with a free trial and the full version costs Â£2.29.
Find the app in the Windows Phone Store here.