Gangsters is a two-sided rooftop shootout. The story is short and to the point: the blue gang cheated the red gang out of a large amount of money and refuses to give it back. Instead of calling the police, the two gangs meet on a rooftop to settle it themselves. Pick your side and fight.
Each player controls one gangster on the roof. Move, jump and shoot at the other side while dodging their fire. Weapons drop from above every so often, and picking one up can turn the fight around, so keep an eye on the sky. Extra characters sometimes join in to help. The last gang standing wins the round.
The controls for each player are shown on screen before the match starts.