Although thoose systems are not fully emulated, you can take good shots from some games, I see no difference from the original games.

Namco Paca Paca Passion

  

Sega Baku Baku Animal

  

Sega Cotton 2

  

  

Cotton Boomerang (there's a typo on the games list on the website and it reads "Cotton Boomrang", missing an "e")

  

Sega Ejihon Tantei Jimusyo

  

Sega Dynamite Deka