Description:

MEKA is a multi machine emulator, originally started as a Sega Master System
emulator, and generally very oriented toward Z80-based Sega 8-bit systems.
MEKA officially emulates the following systems:

- Sega Game 1000 / SG-1000 / Japan, Oceania
- Sega Computer 3000 / SC-3000 / Japan, Oceania, Europe
- Super Control Station / SF-7000 / Japan, Oceania, Europe
- Sega Mark III / MK3 / Japan
+ FM Unit Extension / MK3+FM / Japan
- Sega Master System / SMS / World Wide
- Sega Game Gear / GG / World Wide
- ColecoVision / COLECO / America, Europe
- Othello Multivision / OMV / Japan

You can play other systems on it only if you are smart enough to figure how.
And if you are, I doubt you will want to play Nintendo games. So forget it.