I've read and heard many a thing about Pokemon Battrio, but never seen or have played any bit of it. Has anyone tried it or seen someone try it? I'm curious..

Feel free to discuss any weird 'technique' or anything people do for such a game as well.

I believe that Pokemon Battrio is an Arcade game in Japan. You buy chips with different Pokemon on them (Real, plastic poker-like chips), and using them you can play Battrio with that specific Pokemon. I have no idea what you do on it, or what it's about, but Serebii should be able to answer a few of your questions.

Why can't Battrio be released overseas. I'd play it if it was.

It's because arcades are like extinct out here in the west.