How many Kanji's, (Japanese words ) should i learn if i want comfortably play Japanese import games or non English translated games.

[mai]

Well, if the "changyong hanzi", or whatever the Japanese spelling of it, is smth about 2000, representing bare minimum of the knowledge of every educated person, you'd be ok with the half of it I guess. Though the whole premise -- learn kanzi -- is stupid. I'd suggest to learn language, d'oh! Otherwise you'd be in tough position if, say, you want to play some Famicom game that doesn't use kanzi ;)