Andre o Botelho has ported his Sega Genesis/Sms/GG/Sega CD from Symbian to Windows Phone.
The app features:
The emulator needs Genesis/SmS/GG/SegaCD game ROMS(.bin, .smd, .sms, .gg, .iso, .zip) which are not included and can be found in the usual sources.
ROMs can be loaded from microSD card, SkyDrive and also opened from websites or email.
The developer is taking feedback in the WPC forums here.
The app costs $1.29 with a free trial and can be found in the Windows Phone Store here.
Thanks Ed for the tip.