NBC's gameshow "Hollywood Game Night" opened to decent numbers Thursday night, beating out its broadcast competition in key demos and building on what was a soft timeslot premiere for music competition "The Winner Is."

CBS' "Big Brother," making its Thursday debut this summer, tied with Fox's "Hell's Kitchen" as the night's top show.

According to preliminary national estimates, NBC's "The Winner Is..." averaged a 1.0 rating/3 share in adults 18-49 and 3.9 million viewers overall season in its regular-timeslot premiere, well off from the 1.9 it did when it followed a big lead in from "The Voice" with the second of its two preview episodes on June 17. It certainly didn't help "Winner" that it aired in a time period opposite established reality shows "Big Brother" and "Hell's Kitchen."

Building on "The Winner Is..." at 10 p.m. was "Hollywood Game Night," the new Jane Lynch-hosted gameshow featuring celebrities like Matthew Perry, Lisa Kudrow and Alyson Hannigan. It averaged a 1.3/4 in 18-49 and 4.1 million viewers overall, rising from a 1.2 in its first half-hour to a 1.4 at 10:30. (It underperformed in Los Angeles, where it did a 1.0 demo rating.)

The 1.3 was good enough to beat out the young-adult deliveries of ABC's original drama "Rookie Blue" (1.0/3 in 18-49, 5.2 million viewers overall) and CBS' repeat "Elementary" (0.8/3 in 18-49, 4.5 million viewers overall) and gave NBC its top regular series score in the 10 o'clock hour since the third episode of "Hannibal" on April 18.

Elsewhere, CBS won the night's opening hour with repeats of "The Big Bang Theory" (1.9/7 in 18-49, 8.0 million viewers overall) and "Two and a Half Men" (1.6/6 in 18-49, 6.7 million viewers overall), and then stayed on top at 9 with the Thursday premiere of "Big Brother" (2.0/6 in 18-49, 6.1 million viewers overall).

Fox's "Hell's Kitchen" (2.0/6 in 18-49, 5.1 million viewers overall) tied with "Big Brother" for the 9 p.m. lead in 18-49 and 25-54 (2.5/7), down a tick from its most recent original in the hour. It followed an encore telecast of the Gordon Ramsay show (1.1/4 in 18-49, 2.9 million viewers overall).

ABC had a sluggish night despite airing all originals with its lineup of "Wipeout" (0.9/3 in 18-49, 3.9 million viewers overall) and original dramas "Motive" (series-low 0.8/3 in 18-49, 4.6 million viewers overall) and "Rookie Blue" (season-low 1.0/3 in 18-49, 5.2 million viewers overall).

Preliminary 18-49 averages for the night: CBS and Fox, 1.6/5; Univision, 1.4/5; NBC, 1.0/3; ABC, 0.9/3; Telemundo, 0.6/2; CW, 0.2/1.

In total viewers: CBS, 6.0 million; ABC, 4.6 million; Fox, 4.0 million; NBC, 3.8 million; Univision, 3.7 million; Telemundo, 1.4 million; CW, 0.6 million.