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WIP: Mario Adventure Book 1: Double Trouble

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King of the Mario

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The Top 10 Worst Things that could happen to you in Paper Mario: The Thousand Year Door! (Switch)

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Paper Mario: The Thousand-Year Door Bloopers

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MarioMario54321's Christmas Carol (FULL! NEW EPILOGUE!)

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You Didn't Know This Existed! The Adventures of Johnny and Marine (FULL + EXTRA)

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Merry Christmas, MarioMario54321! (FULL! RE-EDITED!)

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Adventure 101: FULL + Final-Final Episode: Cadaver 101

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Escape from Dimension B3313 (Halloween 2024)

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Super Mario Bros. Wonder Bloopers UNCENSORED!

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The Alternate Ending to Beanventure Part 2! (Now Public!)

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Shotgun Mario 64 Bloopers

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The Path of CandyCao7 (FULL)

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Classic MM54321: Captain Falcon's Revengeful Deathrace

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The Arise of OacYdnac7 (Full) + The Befall of OacYdnac7

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OiramOiram12345 and the Shadowreavers (Complete Full Series)

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IGIUL! (Complete 5-Part Series)

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Mario VS Oiram 3: The Final Battle (Full + Extended Opening!)

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Mario VS Oiram 2: Oiram's Revenge (Full + True Ending!)

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Marjo and Marko, Explained!

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This Game Made Me Depressed

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(April Fools) Ztarragus's Island 4: Ztarragus Gets ANGRY!!!!

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Creator Commentary: Dr. Mario VS The Wonderflu

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Shy Gal Flips Off Kamek

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Ranking All My MM54321 Videos From 2007!

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MM54321: Seven Shoddy Shorts

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It's a Wonder Nabbit Nabbed Christmas Again!

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MM54321 Got 100,000 Subscribers + Joe Lememe Face Reveal

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Super Mario Bros. Wonder Bloopers!

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Halloween 2023: Masters of Horror Land

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Dr. Mario Wonder - NES Game ROM Hack by MarioMario54321

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MM54321: Dr. Mario VS The Wonderflu

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This Is How Most People Reacted To The Paper Mario TTYD Remake!

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Thank You, Charles Martinet! (A Tribute to Charles Martinet)

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Mario's Pizza Delivery: Featuring Peppino

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What's Next? Predictions for the Mario Movie Sequel

03:41

Mario And Friends Go See The Super Mario Bros. Movie

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Mario Kart 8 Deluxe Bloopers 4

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Mario Kart 8 Deluxe Bloopers 3

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Super Mario Bros. Plumbing Commercial but with SM64 and Gmod

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MM54321: Luigi Loses It

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Mario Kart 8 Deluxe Bloopers 2: Electrodrome-aloo

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MM54321: Christmas in New Donk City, Sorta.

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The Boo with the Golden Eye (A James Bond Parody)

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Mario and Sonic at the London 2012 Olympic Games Bloopers 3: Mario mourns the Queen.

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Dark Star X: The Final Attack - Part 3

25:07

Christmas 2021: The Toad Family Under the Bridge

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Mario Party 3 - Woody Woods BUT WITH LYRICS!!

14:30

Halloween 2021: Hotel of Horror

07:13

Super Mario 3D World + Bowser's Fury Bloopers

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Super Mario Bros. 35 Bloopers: The First and Last One!

14:52

Super Mario 3D All-Stars Bloopers

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(April Fools 2021) Mario 35 is (NOT) Coming Back!!!

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Grilled Cakes (Parody of Steamed Hams)

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SMG4's Revenge (Valentine's Day 2021)

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MarioMario54321's Texture Pack Archive (DOWNLOAD)

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Bloopers/Outtakes (How and Why Toad Stole Christmas)

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Christmas 2020: How and Why Toad Stole Christmas

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Super Mario Maker 2 Bloopers 2: Blooper Shooting

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The Better Bed (SMG4's 2020 MEGA Collab Entry)