I mentioned Sudoku-replacement KENKEN last week. An astute reader today points out that Capcom and Nintendo both have logos on the official KENKEN site. There's a reason for that.
This April, Capcom plans to bring a KENKEN game to mobile phones, including the iPhone, according to the official KENKEN website. The website also mentions than a DS version of the game is coming to the U.S.
Sounds like KENKEN could become the new "craze."
KENKEN Craze [KENKEN, thanks Protector One]