The teams try to guess the weight of various creatures, and later have to identify items placed around their heads. The final challenge is a maze filled with mousetraps.

The Food Chain. Animals are arranged according to their place in the food chain.

Weird donut fillings must be identified by the contestants, who later transfer creepy critters from one tank to another. The final challenge involves a creature-filled tub.

Four couples confront their fears in total darkness.

Contestants face their fears and take on challenges in total darkness in the debut of the game-show series.

The players must identify items by scent and do their best not to disturb a sleeping critter.

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Coffins, pitfalls and poison play roles in challenges.

With a metal glove strapped to their hands, the contestants must seek through four cages, each containing its own animal, to see which one will be eating the slab of meat strapped to one palm, also using only their hands, they must guess the weight of four unknown objects

Contestants must guess the height of contortionists. Other challenges include transferring creatures from tank to tank; and navigating a surprise-filled maze.

Contestants wear straitjackets for the first challenge, which forces them to use their tongues to identify objects. Later, they try to guess the weight of a dangerous animal; and have to figure out what's being dumped on them as they sit in a tub filled with water.

It’s double trouble this week when siblings enter the dungeon and compete in some of the grossest, scariest challenges on television. Siblings team up to tackle four tanks filled with unknowns, donuts and more.

Using only their sense of timing, the contestants must jump over an automated stick that is shooting right for their shins then, sitting in a tub of cold water, the contestants must correctly identify three items that are dumped on them.

Players begin by identifying objects placed in tanks. The next round requires those who survive elimination to use their mouths to retrieve plastic rings from creepy boxes. The final challenge involves a booby-trapped maze.

Parents team up with their kids.

Items must be identified by taste. Also: The finalists bathe with fearsome things.

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This week's contestants will do anything for love in this special couples' edition of Total Blackout.

Memorable contestants from previous episodes return for another shot at the grand prize.

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Contestants confront their fears and phobias during challenges.

Instead of making contestants identify weird objects, they must count them! Whoever guesses farthest from the actual number of items will go home.

Season 2 ends with a celebrity edition of the game show, which features Aubrey O'Day, Bob Guiney, Erin Way and Neil Grayston trying to win money for their charities.