warpspeedgo on 18 August 2007
It all depends on advertising outside of videogames. Sudoku was big outside of videogames before any DS titles came out with it, esp. Brain Age. For the most part no one would know about it unless it was in paper form first, that's how they all started too in whichever country they originated. (I believe all those puzzles are from Japan, but I didn't want to just assume so.)
Engage!
