Nova is a Sega Saturn Emulator(SS Emulator) for Windows. Nova is capable to run several commercial games, but it's still in its early stage.

1.automatically select regions.
2.automatically select cartridge types by editing cart.json.
3.automatically save backup memory.

Nova doesn't support: states games via a CD drive

Nova Changelog:

SH2: Added read byte access of TIER register of FRT(3D Lemmings (E)).
SCU: Refactored INTC.
SCU: Made DSP and DMAC as separated excutable devices.
SCU: Supported irregular(Transfer address is not aligned or transfer count is an odd number) DMA transfers.
SCU: Implemented better timing for DMA transfers.
SCU: Implemented better synchronization mechanism for DMAC.
SCU: Implemented caching of DMA triggers.
SCU: Implemented priority for the three DMA levels.
SCU: Implemented all status(Access, Interruption, Standby, Operation) of DMA transfers.
SCU: Implemented Force-Stop of DMA transfers.
SCU: Implemented handling for illegal DMA.
SCU: Implemented handling for the Status of Stopped DMA registers.
SCU: Added handling for DSTA register.
SCU: Added "Cool-down" time for interrupted/Force-Stopped DMA transfers.
SCU: Added restrictions for register access.
VDP1: Added restrictions for register access.
VDP2: Fixed the VBLANK bit of TVSTAT register.
CDB: Refactored handling of DATATRNS register.
CDB: Added byte access of DATATRNS register(Steam Hearts via SCU DMA).
SYSTEM: Added checking for accessing device registers from slave SH2.
MISC: Refined regular expressions of the CUE parser.
MISC: Fixed regular expression bugs of the INI parser.
For Windows