Frank Micelotta, FOX
Utahn David Archuleta performs on top-rated "American Idol."

NEW YORK — At least until more scripted shows return following from the writers strike, viewers seem content with fun and games.

Eight of the 13 top-ranked prime-time shows last week were competitions — to be the best philanthropist on "Oprah's Big Give," the best suitcase-guesser on "Deal or No Deal," the most truthful person on "The Moment of Truth" or most adept old-school game player on "The Price Is Right."

Then there's the biggest competition of all, "American Idol," which towers over everything else on television. The Tuesday and Wednesday editions of the Fox contest each had twice as many viewers as anything else in prime time last week.

ABC News' "20/20" special on Britain's royal family, seen by more than 14 million viewers, had the biggest audience for that newsmagazine in five years.

Fox succeeded in getting some sampling for "New Amsterdam" by twice playing it after "Idol" last week. But both times, more than half of the "American Idol" audience tuned out Fox.

Fox dominated the week, averaging 12.1 million viewers (7.1 rating, 11 share). CBS was second with an 8.1 million average (5.3, 9), followed by NBC with 7.5 million (5.0, 8), ABC with 7.3 million (4.6, 8), the CW with 2.3 million (1.5, 2), My Network TV with 1.3 million (0.9, 1) and ION Television with 540,000 (0.4, 1).

Among the Spanish-language networks, Univision led the pack with a 3.7 million average (1.9, 3). TeleMundo had 1.1 million (0.6, 1), Telefutura 640,000 (0.4, 1) and Azteca 160,000 viewers (0.1, 0).

NBC's "Nightly News" won the evening news ratings race, averaging 9.5 million viewers (6.4 rating, 12 share). ABC's "World News" averaged 9 million viewers (6.2, 12) and the "CBS Evening News" 7 million (4.7, 9).

A ratings point represents 1,128,000 households, or 1 percent of the nation's estimated 112.8 million TV homes. The share is the percentage of in-use televisions tuned to a given show.

For the week of March 3-9, the top 20 shows, their networks and viewerships: 1. "American Idol" (Tuesday), Fox, 28.46 million viewers; 2. "American Idol" (Wednesday), Fox, 28.32 million viewers; 3. "American Idol" (Thursday), Fox, 26.5 million viewers; 4. "The Moment of Truth," Fox, 14.72 million viewers viewers; 5. "20/20: The Royal Family," ABC, 14.14 million; 6. "New Amsterdam," Fox, 13.5 million viewers; 7. "Lost," ABC, 13.01 million viewers; 8. "Survivor: Micronesia," CBS, 12.64 million viewers; 9. "Extreme Makeover: Home Edition," ABC, 12.41 million viewers; 10. "Oprah's Big Give," ABC, 11.88 million viewers.

11. "60 Minutes," CBS, 11.74 million viewers; 12. "Deal or No Deal" (Monday), NBC, 10.82 million viewers; 13. "The Price is Right Primetime," CBS, 10.3 million viewers; 14. "NCIS," CBS, 10.25 million viewers; 15. "New Amsterdam (Thursday)," Fox, 10.12 million viewers; 16. "Two and a Half Men," CBS, 9.96 million viewers; 17. "CSI: Crime Scene Investigation," CBS, 9.71 million viewers; 18. "Law & Order," NBC, 9.63 million viewers; 19. "Without a Trace," CBS, 9.57 million viewers; 20. "CSI: Miami," CBS, 9.36 million viewers.