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

[Podings]

Depends on whether you're playing modern, child friendly games like Yokai Watch, with furigana, the little kana characters over the kanji, that help with the pronunciation.

Without those, you will probably need about the same roster as you need to read a newspaper, which is somewhere between 2000 and 3000.