1) “Survivor” opener, 8-10 p.m., CBS. An “open era” begins, with twists and detours popping up quickly. A new bunch arrives (shown here), including three farmers, two lawyers, a doctor, a med student, a wrestler and actress Ana Sani. She’s been the voice of Strawberry Shortcake, Izzy Moonbow and such; on “The Boys,” she was an analyst who was killed after five episodes.
2) “America’s Got Talent” finale, 9-11 p.m. It’s time to name the 21at winner — after some commotion, with performances by contestants and lots of guest stars. That’s preceded at 8 by the third night of “Voice” auditions.
3) “The Floor” opener, 8 p.m., Fox. Each of the 100 contestants is a champion of something. There are reality-show winners, beauty queens and athletes, plus masters of anything from Legos to memory. There are plenty of ragged mismatches, plus an odd round pitting two people who are wildly unfamiliar with the category.
4) “99 to Beat” opener, 9 p.m., Fox. The 100 contestants range from an alligator wrestler to a Santa pastor and at least two sets of triplets. They play games that are sometimes interesting … but not nearlty interesting enough to merit all the flash, noise and Ken Jeong excesses.
5) ALSO: Already overrun by reality, the night addds a 10 p.m. face-off — a new “Big Brother” on CBS and a “Shark Tank” rerun on ABC. Earlier, pals Matt Damon and Ben Affleck are on “Who Wants to Be a Millionaire?” — but not together. Reruns pair each with a “Jeopardy” whiz: Damon and Ken Jennings at 8, Affleck and Jamie Ding at 9.