Batoo
Batoo is a go variant, named after baduk + juntoo, which means "battle" in Korean. It is explained in Goama, issue #106.
Links
http://en.wikipedia.org/wiki/Batoo is a working link.
ColdNight: Here are some usefull instructions.
http://www.scribd.com/share/upload/12903514/2auvh36d1hwia7k5rs02
Reuploaded
GoDiscussions thread: http://www.godiscussions.com/forum/showthread.php?t=7176
Interview with Kim Okkon, Batoo creator by GoSensations.
Discussion
tapir: Anyone wants to start a page for the World Batoo League?. Seems like they are spending big for Batoo and giving up (say half of) the proper Baduk events instead. The World Batoo League has even an up-to-date english page - the Hankuk-Kiwon itself hasn't.
ColdNight: http://www.batooleague.com/Record/PlayMediaList.aspx
Has a nice collection of vidoes, you can watch to see some of the worlds strogest pros playing Batoo.