Dendy is a
Russian Famicom (
NES)
clone. You see,
Nintendo did not sell their decks in
Russia (as there is very little
market there), but several clever importing
pirates managed to get the parts that they needed and they made quite a decent business selling these systems, and pirate, hacked, and
European games.
If you go to
russia, supposedly no one has heard of the NES or Famicom, but if you ask if they have played
Dendy, you will get a much greater response. These decks are
rare collectors items, and are very valuable in the
US.