as christian said zelda is really straight forward so everybody can immerse in it. The thing before zelda £ on super nintendo, zelda wasn't so famous in europe or us . Well know by gamer but like any other good game. When you have one success for advert and great and simple gameplay it always work look at metal gear the msx version were unknown. But marketing is necessary. I did not like metroid prime ( too linear, too boring ) but when a game start being pretty famous most of people buy it for curioity or advert or whatever reason. Most of people don't know if the game is good or not. It seems nice because I heard of it from somwhere but I don't really know what I'm buying ( I made that mistake for the wii). That the problem, today gamers don't lead the market so a game industry is leading by non gamer and the gameplay and innovation become less important than advert and license.