'Casino' deals with Sam 'Ace' Rothstein (Robert DeNiro), a man of few sympathies who lives and breaths gambling. More importantly, behind them are the usual Scorsese themes of human weakness and betrayal with one important variation: the characters in ' Casino' mostly lack guilt and remorse, making it somewhat different than most of his other pictures. Both include masterful long shots that help us grasp the nature of the protagonist's dealings and they share much of the same cast, including the DeNiro/Pesci team.
Their soundtracks consist of old-time hits that don't necessarily have to do much with the plot (but fit the scenes well) and they feature narrations by their central characters.