New Jersey voters legalized casino gambling in Atlantic City in 1976, and the first casino opened two years later. version of the board game Monopoly, which uses various Atlantic City street names and destinations in the game. Located in South Jersey on Absecon Island, the city is prominently known for its casinos, nightlife, boardwalk, and Atlantic Ocean beaches and coastline. Atlantic City, sometimes referred to by its initials A.C., is a Jersey Shore seaside resort city in Atlantic County, in the U.S.