Monaco was a location primarily featured in The Adventures of Sly Cooperissue 1, "Stealing by Numbers." Madame D'Oinkeau says "We're the toast of all Monaco" when referring to the engagement party between her and Dimitri Lousteau. Dimitri owned a museum here, filled with all of his forgeries, as well as the Venus de Whalo, a statue presented to him by Ms. D'Oinkeau.
Monaco was originally intended to be released in Sly 2: Band of Thieves, but was cut for unknown reasons. It was supposed to take place at a Mediterranean seaside casino resort in which Bentley was going to hijack a massive yacht and smash it into the casino. It is assumed that this would have been an episode featuring Dimitri as the boss due to the fact that Monaco is surrounded on three sides by France.