I remember duel masters was popular a few years ago. What is
popular now? Magic the gathering?
The problem with Duel Masters is that the English version
stopped coming out when the US company found it not profitable
enough in their country.
Hence, when they stop printing it, shipment into our country
also stopped, and thus the drop in popularity. The Japanese version
is still played by quite a no. of youngsters nowadays, albeit much
lesser than before.
For now, I will say that yugioh is still the most popular card
game around, with monopoly being the most popular board game.