Season 1 Episode
- Season 1 Unus Annus
- Season 1 Cooking with Sex Toys
- Season 1 Purging Our Sins with a Neti Pot
- Season 1 Hot Dog'd to Death
- Season 1 Making Our Own Sensory Deprivation Tank
- Season 1 The Good Kind of Cupping
- Season 1 The Bad Kind of Cupping
- Season 1 The Worst Kind of Cupping
- Season 1 Ethan Will Be Kicked in the Balls
- Season 1 Doing Each Other's Makeup in the Dark
- Season 1 Baby Hands Operation
- Season 1 Mark and Ethan Summon a Ghost
- Season 1 2 Truths and 1 Lie - Waxing Edition
- Season 1 Poopsie Sparkly Critters (a slime surprise...)
- Season 1 Play-Doh Thanksgiving
- Season 1 Helium Therapy
- Season 1 Drawing Memes from Memory
- Season 1 1 Man 100 Accents
- Season 1 An A.I. Predicts How We're Going to Die
- Season 1 Mark Turns Ethan into a Mummy to Prepare Him for the Great Beyond
- Season 1 The Chubby Gummy Challenge
- Season 1 We Buy a Professional Hypnosis Video and React To It
- Season 1 Mark and Ethan Attempt an Escape Room
- Season 1 Ethan Destroys Mark's Van with a Bat
- Season 1 There's Still Hope...
- Season 1 Ethan Gives Mark a Viking Funeral
- Season 1 The Great Meat Mistake
- Season 1 Acupuncture Is NOT Painful
- Season 1 Floating in a Real Sensory Deprivation Tank
- Season 1 Mark Reviews The Impossible Burger But There's a Looming Sense of Impending Doom
- Season 1 We Made Nude Paintings of Eachother
- Season 1 You Made Beautiful Music for The Barrel... But Only One Could Win
- Season 1 We Had To Drink Each Other's Pee
- Season 1 Ethan Explores Mark's Haunted Basement
- Season 1 Giving Away Our 1,000,000 Subscriber Gold Play Button
- Season 1 Ethan's Relaxing and Totally Normal Nail Salon
- Season 1 Taped and Afraid
- Season 1 What Was The Most Painful Thing We've Ever Endured?
- Season 1 Donating Toys to Charity
- Season 1 Harnessing Our Dogs' Unlimited Energy
- Season 1 Santa's Mukbang (Drinking 1 Gallon of Eggnog)
- Season 1 Forcibly Turning Mark Into Santa Claus Against His Will
- Season 1 Preserving Ourselves In Wax
- Season 1 Beating Inanimate Objects to Death
- Season 1 Emotional Pain vs Physical Pain... Which is Worse?
- Season 1 Duct Tape Crucifixion (Amy, Please Don't Watch This Video)
- Season 1 You Blink You Lose
- Season 1 2 Grown Men Attempt the Presidential Fitness Test
- Season 1 We Took The Polar Plunge
- Season 1 Hiding Our Sins from Amy's Holy Peepers
- Season 1 We Eat Bugs
- Season 1 DIY Bungee Jump (please don't try this)
- Season 1 We Have The BEST Thumbnails on YouTube and No One Can Tell Us Otherwise
- Season 1 Who Can Make Themselves Taller?
- Season 1 The Sensory Overload Tank
- Season 1 Recreating Ourselves as a Cursed Mannequin
- Season 1 We Took an IQ Test
- Season 1 Ethan Finally Becomes a MAN
- Season 1 Mark and Ethan Go Casket Shopping
- Season 1 We Take a Lie Detector Test to Uncover Our Darkest Sins
- Season 1 Learning to Breathe Underwater
- Season 1 Fixing Mark's Hole with Ramen but Every Time We Add Glue We Get 5% Closer to God
- Season 1 Mark Steals Ethan's Face
- Season 1 You Breathe You Die
- Season 1 2 Absolute Beginners Experience the Dancing Glory that is Salsa
- Season 1 DIY Geriatric Simulator
- Season 1 This Is How We'll Die...
- Season 1 We Cryogenically Freeze Ourselves
- Season 1 This is What Being Tased Feels Like
- Season 1 What Happens When A Youtube Channel Dies?
- Season 1 Bad Bad Beans
- Season 1 We Hired a Real Hypnotherapist to Analyze Our Darkest Dreams
- Season 1 We Turned Our Bodies Into Art
- Season 1 Mark and Ethan Learn About The Human Body
- Season 1 Mark Punishes Ethan
- Season 1 Strange (and legal) Things You Can Do With Your Body After Death
- Season 1 DIY Cheese
- Season 1 Hacking The Very Fabric of the Universe
- Season 1 Looking at Long Lost Memes
- Season 1 Discovering the Secret to Eternal Life
- Season 1 Turning Mark Into an E-Boy
- Season 1 Ethan Redefines Male Beauty
- Season 1 Professional Fire Cupping (Going Even Further Beyond)
- Season 1 An Extremely Sour, Not-at-all Sour Meal
- Season 1 Literally Eating Fire
- Season 1 Unregulated Axe Throwing
- Season 1 Literally Laying On Literal Broken Glass
- Season 1 Making an Indoor Tornado to Flex on Mother Nature
- Season 1 Nutball: The Most Dangerous Game
- Season 1 Becoming a Master of Mime
- Season 1 Discussing the Idea of Murdering Each Other but It's Just a Joke and Definitely Not Serious Haha
- Season 1 Are We Already Dead?
- Season 1 Our Perfect (and last) Valentine's Day
- Season 1 Drunk College Party Simulator
- Season 1 10 Strange Amazon Products Ethan Bought Mark Because He Doesn't Know How to Spend Money Responsibly
- Season 1 Chickens Teach Us About Life and Death
- Season 1 3 Big Boys Attempt the King's Royal Fitness Test
- Season 1 Being Attacked by a Fully Trained Bodyguard Dog
- Season 1 Learning the Ancient Art of Chinese Archery
- Season 1 The Ultimate Trolley Problem
- Season 1 Goat Yoga
- Season 1 Edible Slime was a Mistake.
- Season 1 Granting Access Into Heaven's Sweet Gates
- Season 1 Long Hair, Do We Dare?
- Season 1 We Wrote a Hit Pop Song in 30 Minutes
- Season 1 Mark and Ethan Go on a "Drum Date"
- Season 1 Blowing Our Souls Into Some Hot Glass
- Season 1 Top 10 Worst Things Your Friend Could Possibly Spend Their Money On
- Season 1 Nutball Extreme: Taser Edition
- Season 1 REAL Ghost Hunting at an Abandoned Zoo
- Season 1 We Bought a Camera That Can Look Inside Us
- Season 1 Becoming the World's Greatest DJs
- Season 1 Who Can Teach Their Dog a Trick the Fastest?
- Season 1 Middle School Science Experiment Teaches Us About Life and Death
- Season 1 DIY Chiropractor
- Season 1 Mark and Ethan Get Into a Fight
- Season 1 The Barrel
- Season 1 We Got Pepper Sprayed
- Season 1 We Give Each Other Tattoos Blindfolded
- Season 1 What Does Astrology Say About Our Friendship?
- Season 1 Mark and Ethan Get a Full Body Scan to See What Secrets Lay Hidden Within (and learn their body fat)
- Season 1 Mark Needs To Rub Ethan and Only His Mom Can Help Him
- Season 1 2 Idiots Get Crushed by 18-Foot Giant Snakes
- Season 1 Beer Sauna: Turning a Portable Sauna into a Portable Hell
- Season 1 Mark and Ethan Hunt The World's Most Wanted Criminals
- Season 1 Unus Annus Carves the Roast Beast
- Season 1 5 Weird Apps That Predicted Our Death
- Season 1 We Tried a Labor Pain Simulator
- Season 1 Recreating the Miracle of Childbirth
- Season 1 Mark and Ethan Are Now Fathers
- Season 1 We Force James Charles to Run a Military Obstacle Course
- Season 1 Desperately Trying To Not Touch Our Faces
- Season 1 Reddit 50/50: Two Player Edition
- Season 1 Going on an Internet Scavenger Hunt
- Season 1 Having an Adventure In VR Chat Because We Can't Go Outside
- Season 1 Amazon Shopping for the Apocalypse
- Season 1 Whom Would Eat Whomst First in a Zombie Apocalypse?
- Season 1 Ultimate YouTuber Boxing Showdown
- Season 1 The Deep End of Omegle: Risky Boogaloo
- Season 1 Where in the World is Unus Annus?
- Season 1 Mark Builds a Pillow Fort for the Very First Time
- Season 1 Mark's 1 Weird Talent Leaves Ethan Absolutely Speechless
- Season 1 Wikifeet: A Tale of 2 Tootsies
- Season 1 We Made Every YouTuber Battle in the Hunger Games
- Season 1 We Google Each Other to Find Our Darkest Forgotten Sins
- Season 1 We Played Mad Libs And Ran It Through Google Translate
- Season 1 Mark and Ethan Desperately Try and Name a Single State in the USA
- Season 1 Speed Reading 1000+ WPM to Gain a Complete Understanding of All Human Knowledge
- Season 1 What is the Least Viewed Video on YouTube?
- Season 1 We Found Websites That The World Forgot About
- Season 1 The Scariest True Stories on the Internet
- Season 1 How to NOT be the Perfect Boyfriend
- Season 1 Mark and Ethan Find The Lost City of El Dorado
- Season 1 Mark and Ethan Bet Everything on a Wikipedia Race
- Season 1 The Creepiest Videos on Youtube
- Season 1 Help Us Break a YouTube World Record
- Season 1 2 Men 200 Accents
- Season 1 The Illuminati... Do They Really Exist?
- Season 1 Finding The Lost City of Atlantis
- Season 1 Reading YOUR Scariest True Stories
- Season 1 Mark and Ethan Take a Personality Test
- Season 1 Will AI Soon Take Over Humanity As We Know It?
- Season 1 Running Internet Drama through Google Translate
- Season 1 The Secret Unus Annus No-Touchy-Touchy Hand Shake
- Season 1 Two Male Men Judge Female Women on Their Beauty
- Season 1 Bored? Press This Button.
- Season 1 Don't Go in the Ocean... Ever.
- Season 1 We Explore the Most MYSTERIOUS Mysteries of our Wildy Mysterious Mystery Moon of Mysteries
- Season 1 We Looked at Unus Annus Memes
- Season 1 Is Mark a Masochist?
- Season 1 What the Hell is a Pink Trombone?
- Season 1 Professional Fetish Scientists Rank the Best/Worst Fetishes of 2020
- Season 1 Mark and Ethan Desperately Attempt to Feel Something
- Season 1 An A.I. Generates Our Worst Nightmare
- Season 1 Are Reptilian Humanoids Living Among us?
- Season 1 Like It or Not... This is What The New Human Looks Like
- Season 1 Eating Only Onions for 24 Hours: How Many Onions Does it Take to Kill a Man?
- Season 1 Unus Annus ASMR
- Season 1 We Attempted to Create THICC Water
- Season 1 Making Our Own Gravestones to Prepare For Our Inevitable Demise
- Season 1 How Tall Can A Human Get?: An Impartial Review by 2 Average Height Men
- Season 1 Mark Teaches Ethan Korean
- Season 1 Bigfoot is Real and It Ate My Friend
- Season 1 The End of Unus Annus is Almost Here...
- Season 1 We Explore the Unus Annus Subreddit for Your Delicious Memes
- Season 1 How Big Can a Nuke Get?
- Season 1 How Much Caffeine Does It Take to Kill a Man?
- Season 1 Drinking Real THICC Water... How Bad Does It Taste?
- Season 1 We Played Strip Poker
- Season 1 Harnessing Our Yodeling Power to End The World As We Know It
- Season 1 Mark Cooks Blindfolded While Ethan Guides Him Through FaceTime
- Season 1 We Play the Newlywed Game While Consuming That Which Will Kill the Other
- Season 1 DIY Boob
- Season 1 We Have the Best Bellies on Youtube
- Season 1 The Unus Annus Confessional Booth
- Season 1 DO NOT OPEN UNTIL 2080
- Season 1 Only UNUS-es May Watch This Video
- Season 1 Only ANNUS-es May Watch This Video
- Season 1 Only Watch from 2:15 to 6:11 - Do Not Watch Any Other Part of This Video
- Season 1 DIY Wine
- Season 1 Tearing a Phone Book in Half with Our Huge Manly Muscles
- Season 1 2 Complete Amateurs Enter a Body Building Competition
- Season 1 BLACK LIVES MATTER
- Season 1 Crushing Watermelons Betwixt Our Mighty Thighs
- Season 1 Morphing Our Bodies Into Superhero Poses
- Season 1 Reacting to Your Hilarious Green Screen Memes
- Season 1 Mark Teaches Ethan to Read with Hooked on Phonics
- Season 1 Ethan Roasts Mark for 15 Minutes Straight
- Season 1 There's Something Horribly Wrong with This Picture...
- Season 1 Attempting to Build IKEA Furniture Without Instructions
- Season 1 Mark and Ethan Become United States Citizens
- Season 1 We Made Fanart for Each Other
- Season 1 Our Fans Try to Scare Us with Their Homemade Creepypasta
- Season 1 Recreating Childhood Photos
- Season 1 Will We Break the Boards... Or Will They Break Us?
- Season 1 Finding the Most Cursed Image on the Internet
- Season 1 Learning to Cry on Command to Increase Our YouTube Views
- Season 1 Pee Sauna
- Season 1 Building IKEA's Hardest Piece of Furniture Without Instructions is Impossible
- Season 1 Becoming One With the Horse
- Season 1 The Ultimate Paper Airplane Showdown
- Season 1 Creating Mark FISHbach
- Season 1 Learning How to Lock Pick (FBI Please Don't Watch)
- Season 1 The Most Dangerous Shave
- Season 1 Ethan Traps Mark's Soul in the Palm of his Hand
- Season 1 Bear Trapping 101: An Elegant Knot For An Elegant Beast
- Season 1 2 Men In a Trench Coat Teach You How to Save Money at the Movies
- Season 1 Building the World's First IKEA Boat
- Season 1 Ethan Teaches Mark How to Swim
- Season 1 10 Miracle Products to Give YOU the Thiccest Jaw on Planet Earth
- Season 1 2 Dirty Boys Wash Their Filthy Mouths Out With Soap
- Season 1 Mark is Guilty. Ethan Has the Proof.
- Season 1 Recreating Mark's Childhood
- Season 1 We Put an Apple Watch in a Rock Tumbler
- Season 1 Dummy THICC for Dummies - A Tale of 2 Butts - Pushing Our Butts Even Further Beyond
- Season 1 Reverse Engineering a Kite to Steal the Idea of Electricity From Benjamin Franklin
- Season 1 The Candy Bra Challenge
- Season 1 Mark and Ethan Look at a Puppy for 10 Minutes
- Season 1 Unus Annus Try Pole Dancing
- Season 1 This Is Hiding On Your Body RIGHT NOW.
- Season 1 Tasting Weird Food Combos: Pickles and Chocolate? Ice Cream and Soy Sauce?
- Season 1 The Unus Annus Space Program
- Season 1 The Egg Smashing Game
- Season 1 Can You Bake a Cookie from Cookie Dough Ice Cream?
- Season 1 Bleachus Annus
- Season 1 Dunking Oreos In Literally Anything But Milk
- Season 1 Preparing a 5-Star Meal for Our Youtube Famous Dogs
- Season 1 DIY Teeth
- Season 1 How to Escape from a Hostage Situation
- Season 1 Does This Magnetic Skincare Routine Really Work?
- Season 1 Diy Bed of Nails : Oh God, Please Don't Ever Try This
- Season 1 The Human Mop
- Season 1 Can Sound Therapy Heal All Wounds?
- Season 1 This Is The Most Dangerous Children's Toy Ever Made
- Season 1 Would Chica Save Us From Drowning?
- Season 1 We Do It Better Than Icarus Ever Could
- Season 1 The Beginning of The End
- Season 1 The Annual Unus Annus Dunk Contest
- Season 1 Ultimate Horseshoes
- Season 1 A Serious Conversation Under the Stars
- Season 1 Recharging Our Phones Using Only Brute Strength
- Season 1 5 Products to Grow Your Patchy Beard
- Season 1 Mark Teaches Ethan How to Play the Trumpet
- Season 1 Playing Cards: The World's Deadliest Weapon
- Season 1 We Lubed Our Floor for a Sliding Competition
- Season 1 Breaking Glass With Our Screams
- Season 1 This Is Goodbye
- Season 1 Mark and Ethan Share a Drink
- Season 1 The Wubble
- Season 1 Mark and Ethan Shave Chica
- Season 1 DO NOT TRY THIS UNDER ANY CIRCUMSTANCES
- Season 1 Judging Your Terrible Unus Annus Ideas
- Season 1 Hydro Dipping A Baby
- Season 1 Popping Popcorn with a High-Powered Laser
- Season 1 Puberty Simulator
- Season 1 Grip Strength Test: Loser Becomes the Winner's Butler for a Day
- Season 1 Momiplier Teaches Self-Defense
- Season 1 Transforming Mark into the 8th Wonder of the World
- Season 1 Playing Children's Games in Total Darkness
- Season 1 We're Better Than Dogs
- Season 1 The Koala Challenge: TikTok's Intimate Couple's Trend
- Season 1 1 Gallon of Jello Nearly Broke Us
- Season 1 Too Many Pickles
- Season 1 Pitching a Tent in the Woods But There's a Bear 15 Feet Away
- Season 1 How to Rescue a Cat from a Tree
- Season 1 A Bear Attacked Us in the Middle of the Night
- Season 1 How to Safely Bury Your Friend
- Season 1 Team Building for 2: Trust Fall, Tug-of-War, and More!
- Season 1 How to Start a Fire (except don't...)
- Season 1 Mark's Outdoor Escape Room
- Season 1 Hunting HeeHoo
- Season 1 Was 2020 a Bad Year for Unus Annus?
- Season 1 Mark Gives Ethan a HOT (stone) Massage
- Season 1 We Smell Every Smell
- Season 1 How Many Slaps Does It Take to Cook a Chicken?
- Season 1 2 Boys 2 Poops
- Season 1 Mark Teaches Ethan How to March in a Marching Band
- Season 1 We Finally Drank Our DIY Wine
- Season 1 2 Adults Take a 4th Grade Math Test
- Season 1 Making Snow Cones With Literally Anything But Normal Flavors
- Season 1 We Attempt Pottery Without Amy's Help
- Season 1 Can Plants Feel Pain?
- Season 1 How Far Can We Chuck a 16lbs Rock?
- Season 1 We Pierced Each Other's Ears
- Season 1 We Ate Dog Treats So You Don't Have To
- Season 1 We Accidentally Made an SCP While Amy Was Away
- Season 1 BEYBLADE NUTBALL
- Season 1 Making the Ultimate Unus Annus Burger
- Season 1 Making Soda With Literally Anything But Soda
- Season 1 Pee Soda
- Season 1 Learning to Use The Force
- Season 1 Brick Soccer
- Season 1 We Attempt to Make Holy Water
- Season 1 Amy Sent Us a Mystery Box
- Season 1 Mark Knows What Ethan Did...
- Season 1 This Video Will Never Make Sense
- Season 1 We Attempt to Make UNHOLY Water
- Season 1 We Will Churn Thy Butter
- Season 1 Ethan Teaches Mark Gymnastics
- Season 1 The Great Ice Cream Cake Race
- Season 1 Mark Teaches Ethan to Wrestle
- Season 1 Ethan Watches as Mark Achieves the Impossible
- Season 1 Consuming the World's Hottest Chip
- Season 1 This Video Went Completely Out of Control
- Season 1 The 1000 High Five Challenge
- Season 1 Bobbing For Apples But the Water Keeps Getting Thiccer
- Season 1 Mark Breaks His Nose On An Aerial Hoop
- Season 1 Mark and Ethan Milk a Goat
- Season 1 Shooting Archery ON A HORSE
- Season 1 DIY Minesweeper
- Season 1 Literally Finding a Needle in a Haystack
- Season 1 Drawing on Each Other's Backs in Total Darkness
- Season 1 This is For FUN and NOT a Fetish
- Season 1 Mark Conquers His Fear of Night Swimming
- Season 1 The Painful World of Aerial Silks
- Season 1 We Bought Every Grinch Costume on Ebay
- Season 1 Pumpkin Taste Tier List
- Season 1 Learn to Jump Higher in 16 Minutes and 16 Seconds
- Season 1 Bobbing For Literally Anything But Apples
- Season 1 This Video is Completely Unedited
- Season 1 Momiplier Tells Us True Scary Stories from Korea
- Season 1 Pumpkin Spice "Challenge"
- Season 1 Mark and Ethan Build a Scarecrow
- Season 1 Pressure Washing Our Sins Away
- Season 1 We Force Mark to Swim in the Ocean (HIS GREATEST FEAR)
- Season 1 Fighting Fish to the Death in the Deep Blue Sea
- Season 1 Cryptid Olympics
- Season 1 Phasmophobia in Real Life
- Season 1 Edward Pumpkin Hands
- Season 1 Blood Bath
- Season 1 The Unus Annus Annual Costume Contest
- Season 1 Ethan Turns Mark into a Werewolf
- Season 1 Ethan Kidnapped Mark
- Season 1 The Truth of Unus Annus
- Season 1 Accepting the Truth
- Season 1 The Unus Annus Last Supper
- Season 1 Being Brutally Honest with Each Other
- Season 1 Recreating Every Single Unus Annus Video
- Season 1 All Our Video Ideas That Never Happened
- Season 1 Who's Cutting Onions In Here???
- Season 1 The 1st Annual Unus Annus Roast
- Season 1 God's Fitness Test
- Season 1 Saying Goodbye to All Our Guests
- Season 1 Everything's Legal If You're Dead
- Season 1 7 Minutes in Heaven 7 Minutes in Hell
- Season 1 The Unus Annus Annual Sleepover
- Season 1 Goodbye.
Unus Annus - Season 1 Episode 302 Can Plants Feel Pain?
9.70 48 minutes Plants. We don't understand them and they don't understand us. But could there be a middle ground in the realm of pain? With our superior lie detector technology, we will not be stopped from discovering the truth.
