HBO has renewed “Boardwalk Empire” for a second season following a boffo pilot episode, which drew 4.8 million viewers for its first airing Sunday night. Boardwalk-empire-02-1024

The episode nabbed more viewers than any other HBO premiere in six years.

With two additional telecasts, the 1920 Atlantic City Prohibition-era drama was watched by an audience of 7.1 million and that number should increase greatly with DVR replays, video on demand and additional linear telecasts the rest of this week.

In March 2004, the debut of “Deadwood” scored a bigger audience but the David Milch western had “The Sopranos” as a lead-in.

The “Boardwalk Empire” pilot was directed by Martin Scorsese, who acts as exec producer with creator Terence Winter. Show stars Steve Buscemi, Kelly Macdonald, Michael Pitt and Michael Shannon.