this one is a multi emulator that supports netplay, the systems it supports are these:
Atari Lynx
Neo Geo Pocket (Color)
WonderSwan
GameBoy (Color)
GameBoy Advance
Nintendo Entertainment System
Super Nintendo Entertainment System/Super Famicom
Virtual Boy
PC Engine/TurboGrafx 16 (CD)
SuperGrafx
PC-FX
Sega Game Gear
Sega Genesis/Megadrive
Sega Master System
Sega Saturn (experimental, x86_64 only)
Sony PlayStation



it uses mostly usa roms, for netplay it uses various servers, which i will post here:
emu-russia.net
gs.emu-land.net
localhost
mednafen-nl.emuparadise.org
mednafen-us.emuparadise.org
netplay.fobby.net
node.asnitech.co.uk
s1.mednafen-it.org
s3.mednafen-it.org
Speedvicio.dtdns.net
i'll post the simplified version of mednafen with the newest version of mednaffen, which is 1.21.3: www1.zippyshare.com/v/5RTe9Tiu/file.html