Game Center CX is a fantastic reality TV show with a couple of fantastic DS games. The first game made it to the US with a localised version. That doesn't mean its sequel will.
The DS games knowingly pay homage to Famicom-era day games of yore. The first game was introduced to American gamers as Retro Game Challenge by publisher XSEED. "Retro Game Challenge started off well but still hasn't gotten to the point where we can justify bringing over the sequel," XSEED's Ken Berry said in a recent interview. "It's amazing how many people write to thank us for publishing that game, so perhaps as those enthusiast fans continue to spread the word we will get to where we need to be eventually."
Nice letters don't translate into big sales. They do translate into nice letters, which is heartwarming. Heartwarming doesn't pay the bills, though. And that's sad.