AMC's "Fear the Walking Dead" delivered the highest-rated first season on cable television since Nielsen began tracking Live+3 numbers in 2005.

In its six-episode first season, the "Walking Dead" spinoff averaged 11.2 million total viewers, 7.3 million adults 18-49 and 7.2 million adults 25-54 in live viewing plus three days of DVR playback. The Oct. 4 season finale drew 10.1 million viewers, 6.5 million adults 18-49 and 6.6 million adults 25-54.

"When we set out to launch a companion series to the #1 show on television, there were truly many things to fear, beyond 'Fear' itself," Charlie Collier, president of AMC, SundanceTV and AMC Studios, said in a statement. "To see this show stand alone, break through and set records as a unique piece of storytelling is very gratifying and a tribute to great creative talent."

AMC has launched a web series, "Fear the Walking Dead: Flight 462," that will air during commercial breaks of the upcoming season of "The Walking Dead."

"Fear the Walking Dead" will return next year with a 15-episode second season. Each episode will be followed by the live after-show "Talking Dead," hosted by Chris Hardwick.

"The Walking Dead" kicks off its sixth season Sunday at 9 p.m. ET/PT on AMC.