People buy the Wii then Wiisports to play it ,at least in Japan ,in US it would be Zelda .Then they need a second controller and they buy Wiiplay .Then we find the void .......decent sales in US but nothing remarkable ( along the PS3 a bit less in most multiplattform but with double the hardware sold is twice worse ) and crap sales in Japan where things like Path of Radiance have made discret debuts and others as Sonic ,Dragonball ,Shin Chan,Gundam etc have flopped big time .