https://www.analogue.co/mega-sg/

From Analogue's page:

We set out to design the definitive way to explore Sega's 16-bit and 8-bit era.
A reimagining of the underdog that led a 16-bit revolution.
Engineered with an FPGA.
No emulation.
1080p.
Zero lag.
Total accuracy.
Mega Sg is not a plug n' play toy.
Compatible with the 2,180+ Sega Genesis, Mega Drive and Master System game cartridge library.
Explore and re-live one of the greatest video game systems of all time with no compromises.

I think, I just came. ;o)