CBS' Big Bang Theory repeats won Thursday night for the network, topping new reality TV episodes.

For the night, CBS averaged a 1.6 in the key 18-49 demographic, beating Fox's 1.5 and ABC/NBC's 1.3, HitFix reports.

CBS also had an average of 6.72 million viewers along with a 4.4 rating/7 share, which allowed the network to easily outpace NBC's 5.07 million viewers and 3.2 rating/5. ABC narrowly beat Fox with 4.52 million viewers and a 3.0 rating/5. Fox had 4.46 million viewers and a 2.95 rating/5.

The CW brought up the rear for the night with only 687,000 viewers, a 0.5 rating/1 and only a 0.2 in the 18-49 demo.

The winner of the night was Theory, which ran only repeats, but still had 8.94 million viewers at the 8 p.m. slot, but came in second in the 18-49 demo with a 2.1. Two in a Half Men was close with 7.03 million with a 1.6 in the demo.

Meanwhile, NBC's Million Second Quiz finished its first 11 day run up 27 percent, according to Deadline. Its ratings increase saw it easily beat X-Factor, though it last in the key demo by a 58 percent margin, which continues to struggle mightily in ratings, hitting a new low with 4.46 million viewers.

image: CBS