The only systems I can think about for PAL games are de Retro Duo and the Super Retro Trio. I know that you can split the NES ans SNES boards to make them standalone consoles with the Duo. I don't know about the Trio but I'm pretty sure that it is possible too. I'm not sure if the compatiblility is decent for PAL games however. They mostly designed for American NTSC games.