Mario, Luigi and their lesser known third brother Mr T have had enough of being plumbers! They are picking up shotguns and turning gangster, yo! Instructions, hints and cheats for Mario Gangster Brothers: This is a light hearted Mario remake with a retro theme to it. You will recognise the characters and game setting but the shotguns are all new! Mario and Luigi Gangster Brothers has 3 characters, 8 levels and 3 guns.