The show has been elaborately made to the point that producers turned to a professional at something called the Language Creation Society to design a vocabulary for the savage Dothraki nomads who provide some of the more Playboy-TV-style plot points and who are forced to speak in subtitles. Like “The Tudors” and “The Borgias” on Showtime and the “Spartacus” series on Starz, “Game of Thrones,” is a costume-drama sexual hopscotch, even if it is more sophisticated than its predecessors. It says something about current American attitudes toward sex that with the exception of the lurid and awful “Californication,” nearly all eroticism on television is past tense. The imagined historical universe of “Game of Thrones” gives license for unhindered bed-jumping — here sibling intimacy is hardly confined to emotional exchange.

The true perversion, though, is the sense you get that all of this illicitness has been tossed in as a little something for the ladies, out of a justifiable fear, perhaps, that no woman alive would watch otherwise. While I do not doubt that there are women in the world who read books like Mr. Martin’s, I can honestly say that I have never met a single woman who has stood up in indignation at her book club and refused to read the latest from Lorrie Moore unless everyone agreed to “The Hobbit” first. “Game of Thrones” is boy fiction patronizingly turned out to reach the population’s other half.

Since the arrival of “The Sopranos” more than a decade ago, HBO has distinguished itself as a corporate auteur committed, when it is as its most intelligent and dazzling, to examining the way that institutions are made and how they are upheld or fall apart: the Mafia, municipal government (“The Wire”), the Roman empire (“Rome”), the American West (“Deadwood”), religious fundamentalism (“Big Love”).

When the network ventures away from its instincts for real-world sociology, as it has with the vampire saga “True Blood,” things start to feel cheap, and we feel as though we have been placed in the hands of cheaters. “Game of Thrones” serves up a lot of confusion in the name of no larger or really relevant idea beyond sketchily fleshed-out notions that war is ugly, families are insidious and power is hot. If you are not averse to the Dungeons & Dragons aesthetic, the series might be worth the effort. If you are nearly anyone else, you will hunger for HBO to get back to the business of languages for which we already have a dictionary.

GAME OF THRONES

HBO, Sunday nights at 9, Eastern and Pacific times; 8, Central time.

Written by David Benioff and D. B. Weiss; based on the fantasy book series “A Song of Ice and Fire” by George R. R. Martin; directed by Tim Van Patten; Mr. Benioff and Mr. Weiss, executive producers; Carolyn Strauss, Guymon Casady, Vince Gerardis, Ralph Vicinanza and Mr. Martin, co-executive producers; Mark Huffam and Frank Doelger, producers; Marco Pontecorvo, Alik Sakharov and Matt Jensen, directors of photography; Gemma Jackson, production designer; Michele Clapton, costume designer.