The shooting started just after 3:00 a.m. inside a home on Wyona Street in East New York.
According to police, the house was packed with people attending a party advertised on flyers as "Freaky Friday Party."
Police believe it started when two people who were already in some sort of fight bumped into each other, and then it spilled out onto the street.
Donzell Rogers, 20, was shot and killed.
Police said seven shooting victims were in stable condition at area hospitals Saturday.
Police say they have recovered two weapons from the scene and believe it may have been gang related.
Three people are in custody and being questioned by police.
No one has been charged.