Iketomu, a Japanese blogger and robot enthusiast who maintains an English blog, has uploaded some videos from the 7th Wonderful Robot Carnival which took place on July 19th, 2009. For the uninitiated, it’s a Robo-One style tournament with several events that push the limit of the competitor’s custom-built hobby robots:

• Dash 2000 (2 meter foot race)
• Bottle Traction (moving a basket of bottles to the finish line)
• Dice Shot (1-on-1 soccer with fuzzy dice)
• Cubes (teams score points by moving cubes to their goal)
• Rumble Fight (multiple robot battle)
• 1-on-1 Fight

Dash 2000:

Doka Harumi (left) vs Sarga (right)
Video (Mirror):

Bottle Traction:

Kinopy (foreground) vs Kabura (back)
Video (Mirror):
http://www.youtube.com/watch?v=HmusYayOwp0/youtube]

Many more videos including the exciting final match at:
[source: Biped Robot News Japan] and [Impress Robot Watch]