Which gundam game is this one?

I saw this on youtube a while back and recently popped back up, which online game is this, and more importantly is it in english and where can I DL is from?

http://www.youtube.com/watch?v=a2UjTMXpRY0

Gundam Online. It is a MMORPG and you can play it for free online, I believe. It is only in Japanese. I live in Japan, so of course it works for me, but I don’t know if it works outside of Japan.

The matches are generally always 50 vs. 50 with one additional player on each side taking the role of the commander. It can be insanely frustrating due to lag though. My internet connection can download more than 2mbps and yet due to the lag issues, I find the game nearly unplayable. Considering the lag I get here, even if you can connect from overseas I have to think the issues would be even worse.