China kicked off the three-day long World Humanoid Robot Games on Friday, looking to showcase its advances in artificial intelligence and robotics with 280 teams from 16 countries.

But the robots had other plans. During soccer matches, four mechanical players crashed into each other and collapsed in a tangled heap of metal limbs.

A video (top) features some of the robots in action on the first day. A running contest, for example, shows several of the bipedal-bots racing along a track at impressive speed, although one of the competitors clearly has trouble sticking to its lane.

The first World Humanoid Robot Games began Friday in Beijing. More than 500 humanoid robots in 280 teams from 16 countries, including the U.S., Germany and Japan, competing in sports including soccer,

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The World Humanoid Robot Games came to a close on Sunday (August 17) in China's capital Beijing, after three days of sporting events featuring humanoid robots from 280 teams and 16 countries.