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I like the Classic, Super Sloppy, Fox Family, Nickelodeon Family & 2000 Versions.

On the television shows IRL:
Double Dare & Super Sloppy Double Dare, had 2 players on each team.
Family Double Dare & Double Dare 2000, on the other hand, had 4 players on each team.
One Difference is that Double Dare 2000 has the Triple Dare Challenge in the game's 2nd Round which is worth triple the dollars and a prize.
In Double Dare, Super Sloppy Double Dare & Family Double Dare, the Final Round is called the Obstacle Course.
Double Dare 2000 also has an Obstacle Course but its called the Slopstacle Course.

But in the Mermaid Princess RP Guild, Family Double Dare & Double Dare 2000 have options for 2 or 4 player teams.

Family Double Dare had 2 versions:
The first was shown on the Fox Network from April 3 to July 23, 1988
and the second was shown on Nickelodeon from October 6, 1990 to February 3, 1993.

In the Fox Version, there's an expanded introduction:
TAKE THE PHYSICAL CHALLENGE!
Tonight, the whole family will dare to win on the game that's filled with spills and pack with prizes, Family Double Dare!

Also in the Fox Version:
The Toss-Up Challenges were worth the Dare Amounts in Round 1 & Round 2. $50 for Round 1 & $100 for Round 2
The 7th Obstacle in the Obstacle Course was worth a Cash Prize
Obstacle Course Prizes are shown after Before each Round
The Grand Prize is shown after all the segments of the Obstacle Course are introduced.

While in the Nickelodeon Version:
The Toss-Up Challenges were worth the Normal Amounts in Round 1 & Round 2. $25 for Round 1 & $50 for Round 2
All Obstacles contained a prize upon completion
The expanded introduction is not shown
Obstacle Course Prizes are shown after the introduction of each Obstacle in the Obstacle Course

Oh, I almost forgot, I missed one incarnation of Double Dare & that is the 2018 Reboot. The Original, Super Sloppy, Fox Family, Nickelodeon Family & 2000 are the classic versions to my knowledge.

Here's the Scoring Valves used in Double Dare:
Toss-Up Challenges:
= Round 1 Dare offers $20 when (Classic Double Dare & Super Sloppy Double Dare)
= Round 2 Dare offers $40 (Classic Double Dare & Super Sloppy Double Dare)
= Round 2 offers $50 [Fox Family Double Dare & Double Dare 2018]
= Round 2 offers $100 [Fox Family Double Dare & Double Dare 2018]
= Round 2 offers $25 (Nickelodeon Family Double Dare & Double Dare 2000)
= Round 2 offers $50 (Nickelodeon Family Double Dare & Double Dare 2000)

Question Values:
= Round 1 offers $10 (Classic Double Dare & Super Sloppy Double Dare)
= Round 2 offers $20 (Classic Double Dare & Super Sloppy Double Dare)
= Round 1 offers $25 (Family Double Dare: Fox & Nickelodeon, Double Dare 2000)
= Round 2 offers $50 (Family Double Dare: Fox & Nickelodeon, Double Dare 2000)
= Round 1 offers $50 [Double Dare 2018]
= Round 2 offers $100 [Double Dare 2018]

Dare State Question Values:
= Round 1 offers $20 (Classic Double Dare & Super Sloppy Double Dare)
= Round 2 offers $40 (Classic Double Dare & Super Sloppy Double Dare)
= Round 1 offers $50 (Family Double Dare: Fox & Nickelodeon, Double Dare 2000)
= Round 2 offers $100 (Family Double Dare: Fox & Nickelodeon, Double Dare 2000)
= Round 1 offers $100 [Double Dare 2018]
= Round 2 offers $200 [Double Dare 2018]

Double Dare State Values:
= Round 1 offers $40 (Classic Double Dare & Super Sloppy Double Dare)
= Round 2 offers $80 (Classic Double Dare & Super Sloppy Double Dare)
= Round 1 offers $100 (Family Double Dare: Fox & Nickelodeon, Double Dare 2000)
= Round 2 offers $200 (Family Double Dare: Fox & Nickelodeon, Double Dare 2000)
= Round 1 offers $200 [Double Dare 2018]
= Round 2 offers $400 [Double Dare 2018]

Challenge State Values:
Same as above
= Round 3 offers $300 & Prize (Double Dare 2000: Triple Dare Challenge Only)

Obstacle Course Valves
Randomized per show with 1 for each of the 8 segments. In the Fox Version of Family Double Dare, the 7th Obstacle is worth a Cash Prize.

What would be the team name for Rune Knight Stevie & Mermaid Xia's team be on Double Dare on the Red or Blue Team?

Knights & Roses sound nice.

Oh and then there's Super Special Double Dare from 1992. The 6th incarnation of Double Dare that I missed, even though it had only 2 episodes.

Here's a list of all the known segments in the Obstacle Course:
1-Ton Human Hamster Wheel
Bathtub
Bats in the Belfry
Big Bowl
Big Cheese
Big Gulp
Big Kahuna/Waveslide
Big Scoop
Blow Out
Blue Plate Special
Brick Wall Breakout
Buried Treasure
Bye Bye Birdie/The Big Bird Cage
Clam Dip
Clogged
Couch Searching
Dallas
Das Blimp/The Blimp
Doggie Door
Down the Hatch
Double Click
Double Dare Helix
Drawbridge/Bridging The Gap
Drumroll
Fancy Footwork
Fireman's Flag Pull
Garbage Truck
The Gak Factory
Gak Geyser
Granny's Attic/Customs Inspector
Grease Monkey
Gum Drop
Happy Birthday
Hats Off
The Hot Dog
Hourglass/Time's Running Out
Icy Trike/Desert Trike
In One Ear (And Out The Other)
Inside Out
Its in the Bag
It's in the Mail/Special Delivery
Kid Farm/Ant Farm
Kid Wash
Lake Double Dare (Versions 1 & 2)
Liza Puffs
Low Hurdles/Targets
The Lift
Manhole
Marshmallow Mountain
Mirror Maze
Monkey Bars
Moonwalk
Mount St. Double Dare
My Pet Dinosaur
Nightmare
One Nation Underwear
Overstuffed
Pick It/Da Nose
Popcorn
Pop Lockin'
Quicksand
The Recipe Tire Run
Ripcord
Sewer Chute (Versions 1 & 2)
Shark
Slime Hydrant
Slime Squeeze
Spud Splat (Versions 1 & 2)
Squelch M' Waffles
Sundae Slide
Sushi
Suspension Bridge
The Everglades
The Swamp
Syrup/Slime Canal
The Tank
Tarzan Vine
Test Your Strength
Thar She Blows!/Horn Blower
Tire Swing
Toejam/Footlocker
Toothpaste
Tube-a-Totter
Typewriter/Hunt 'n Peck
The Umpire State Building
Unboxing
Under the Covers
Under the Tree (1986 Christmas Episode)
Wall Climb
The Woiks!/The Works
Wrestlemania!/Wrestlerama
(Turn/Through) The Wringer/Kiq Squisher

More info:
Obstacle Course Segments

= Rephrased Post
Super Spacial Double Dare was short lived in 1992 as it only aired two episodes. The first being an NBA All-Star Edition & the other had TV Guest Stars. The only Episode to have the Obstacle Course being completed was the NBA one. I almost forgot to mention the Super Special incarnation version as well.

The gameplay of Super Special Double Dare is the same but all Obstacle Course Segments contained a Bonus Cash Prize in addition to a Prize:
Segments 1-2 had a $25 Bonus
Segments 3-4 had a $50 Bonus
Segments 5-7 had a $100 Bonus
Segment 8 had a $250 Bonus

In the Sneak Preview of Super Sloppy Double Dare during the Super Bowl, the Obstacle Course Segments had a $500 Cash Bonus Prize for each Obstacle Course segment that was completed leading to a Grand Total of $4,000.

The only Episode to have the Obstacle Course being completed with the $500 Cash Bonus Feature was the Slime Bowl Preview.

The 2018 & 2019 Reboots also had a Cash Bonus for their Tournament Specials, with each Obstacle Course segment being worth $1,000 for each Obstacle Course segment that was completed & when all 8 segments were completed that Cash Bonus total is automatically brought up to the Grand Prize being worth $10,000.

Sometimes, on Double Dare, there would be a toy rowboat shown.