It's "Big Brother" versus "Survivor" as contestants from the reality game shows take on snake tanks, facedown drowning, exploding trucks and each other.

There won't be any roses for "Bachelor" and "Bachelorette" alumni Rachel Lindsay, Bryan Abasolo, Corinne Olympios and Vanessa Grimaldi when they take on their biggest fears.

It’s a battle of the bands as Timeflies, Bea Miller, Drake Bell and others are pushed to the limit in challenges involving runaway ostriches, cement burials and ATV jumps.

Tyler Oakley, TiTi & LaLa, Jc Caylen and other internet stars go viral in completely new ways as they face snake-filled tanks, bug-hungry zombies and high-flying selfies.

Tyga, Lil Yachty and other hip-hop stars handle creepy creatures, get locked in a tank of rising ice water and dangle underneath a helicopter.