Sega Master System

[Vigilante8]

looking for one, dosen't have to have games

[The Insomniac]

I have one, you can have it for $30 and I can give it a Mark-III (Japanese Master System) mod for an extra $5, that's a bargain.

Doing a Mark-III mod can change some games, like Wonder Boy will be called "Super Wonder Boy" and will be a little more difficult, or Zillion will have Japanese text. Most games will also have a Mark-III logo pop up before the intro screen. You can turn the mode from US to JAP via a switch installed on the back.