why?!?

pokemon red,

pokemon blue,

pokemon green,

pokemon yellow,

pokemon gold,

pokemon silver,

pokemon crystal,

pokemon ruby,

pokemon sapphire,

pokemon firered,

pokemon leafgreen,

pokemon emerald,

pokemon diamond,

pokemon pearl,

pokemon platinum

is it because of a new generation of gamers getting it (kids)

or are the same people buying time after time the same old game

Um... because they're still fun games?

Why do people still buy Madden? NHL? ANY sequel ever?

I buy them because I enjoy them. I can't, and don't want to, speak for others.

I bought them so I can catch them all.

new stuff if you look from nhl 2001 to  nhl 2009 there's a world of difference in the gameplay but pokemon damn it's always the same thing and it sells like crazy

well you will never catch them all cause they always releasing some new weird pokemons, in the same game as previous ones but with a new bad team to beat and two or three new supreme pokemons

Ask pichu_pichu he knows ....

Well that's not true.  They always seem to add a bunch of different stuff in pokemon games, new types, different ways to get moves, the type values changing, the swithcing and transfering of moves etc....

lol I bought Red, Blue and Yellow though they are basically the same game ^^

 Pretty much this.