They've had pretty good marketing for this game. They have had entire buildings plastered with a jumbo poster. They've had TV spots. They've been on every conceivable gaming site and in every magazine, even tiny ones, and even in national newspapers. They've had stores stuffed full of the game. For some reason a lot of people just missed this game. It'll get around by word of mouth.
Those same stores that were stuffed full of the game have sold out, so it's selling well.