Casino is, in no way, a sequel to Goodfellas. They are completely different movies involving completely different characters. That said, the two films are very much connected. Both are mob films written by Nicholas Pileggi. Both star Robert De Niro as a cunning, criminal figure and Joe Pesci as a mobster prone to violent, uncontrollable rages. Both show the mob at the zenith of its power before the feds move in and the whole scene unravels. The comparisons were a little too close for some critics who saw Casino as a Goodfellas remake, but fans were just happy to return to this violent underworld one more time. It also holds up amazingly well on repeat viewings, and Sharon Stone and James Woods are absolutely brilliant as a prostitute and a sleazy pimp. Don't watch the version they show all the time on USA. It's not the same movie without the swear words.