I started playing video games since I was very little, but I just started collecting two years ago. I collect:

Consoles
RPGs on all systems
US Dreamcast games
Pal Dreamcast games
Jap Dreamcast games

However, I am now running into a little problem that I need advice for. I want to start collecting for the Nintendo 64. But I don't know how to go about it.

Should I collect complete sets of US or Jap games? I am interested in Jap games more because of the nicer boxart and usually they are more complete (I am a sick completist). Also there are fewer Jap games released.

If I were to collect US games, should they be complete? I can't decide.

Where can I get the games besides on Ebay?

Can you give me some advice?