The 2001-2010 Fist of the Blue Sky took the head exploding martial arts violence of the legendary Fist of the North Star and moved it from a post apocalyptic landscape to the gang wars and pre-World War II international machinations of 1930s Shanghai. Sammy's latest pachinko machine looks to recapture that action.
See if it succeeds...
The Fist of the Blue Sky manga was released in North America in Gutsoon's Raijin weekly anthology. An anime adaptation of the series was produced in 2006.