K-1 World Grand Prix hands-on at Gamespot.

"TOKYO--For the past few years, mixed martial arts fighting has become increasingly popular with television viewers. One of the longest-running combat sports series is the K-1 series, which combines elements of kickboxing and boxing as well as techniques from tae kwon do and karate. Like UFC in America, K-1 is huge in Japan and, as a result, D3 Publishing is bringing to the Nintendo DS a K-1 series fighting game called K1 World Grand Prix. We had a chance to take this game on for a few rounds on the floor of the 2007 Tokyo Game Show."

Full Source: Gamespot