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Survivor has returned to CBS’ schedule — for the 34th time — and it remains one of television’s top 20 shows.

The Nielsen company said the debut of a new Survivor edition with host Jeff Probst was seen by 7.7 million viewers last week. The 18 most-watched prime-time programmes last week were either on CBS and NBC, with AMC’s The Walking Dead the lone exception. Thirteen of those shows were on CBS.

Nielsen released its weekly ratings on Thursday, two days later than normal, because of a power outage over the weekend at one of its facilities in Florida.

CBS won the week in prime-time, averaging 7.3 million viewers. NBC was second with 5.9 million, and won the 18-to-49-year-old age group that advertisers covet. ABC had 4.4 million, Fox had 2.6 million, Univision had 1.7 million, the CW had 1.34 million, Telemundo had 1.33 million and ION Television had 1.2 million.