SMB: The Lost Levels - A-D Any% in 6:14.3 (World Record)

Super Mario Bros.: The Lost Levels - Warpless D-4 in 35:35 + 8-4 in 21:41 (Double World Record)

Exploring Glitched Levels in SMB: The Lost Levels

Secret Codes Hidden INSIDE Super Mario Bros.

I Beat the Hardest Mario with a DDR Mat

This Mario 3 Romhack is Insane

SMB:TLL - Any% D-4 in 13:38 (World Record)

SMB2-J ACE World Record in 7:39.07

Play NES Games IN 3D!!

Super Mario Bros. "000000 Points" TAS Premiere & Commentary

Beyond the Donkey Kong Kill Screen

Speedrunner Plays Mari0 (Portal Mario)

Speedrunner plays Jelly Mario

I DESTROYED this Speedrun World Record...

Mario goes to an Alien Planet

This Mario Game Broke My Brain

Super Mario Bros.: The Lost Levels - Any% D-4 Speedrun in 13:43.7 (World Record)

Playing Mario on McDonald's Wi-Fi

Mario Romhacks Keep Getting Crazier

(8:09.3) Super Mario Bros.: The Lost Levels - Any% 8-4 Speedrun (World Record)

Super Mario Bros.: The Lost Levels - Any% D-4 Speedrun in 13:47.1 (World Record)

Pro Speedrunner plays Nintendo World Championships: NES Edition

SMB2-J Both Endings Speedrun in 15:34 (World Record)

SMB2-J Warpless 8-4 in 21:13 [WR] + All Stages in 35:52 [WR]

Reacting to the PERFECT Super Mario 3D World Speedrun

Super Mario 3D World 100% Speedrun Promo [Trailer]

Mario Maker Kaizo... but it's on NES

This is basically Mario Maker on the NES

(21:16.1) SMB2-J Warpless 8-4 Speedrun (World Record)

WORLD RECORD - SMB2-J All Stages in 35:57

This should've been a HUGE World Record...

Only Up but you play as Mario

How I Got the World Record in Super Mario Bros. TWO Player Speedrun

I Beat the World Record by 0.01

This Most Mindblowing Mario Game

Wait, the Virtual Boy is GOOD??

The Most INSANE NES Game of All Time

What if Super Mario Bros. was 2-Player?

Get Achievements for Speedrunning Mario!

The Best Animated NES Game

How I Beat 6 Mario Games in 53 Minutes

Super Mushroom: The Video Game

Speedrunner Ranks the HARDEST NES Games

Super Mario Bros. Wonder - REACTION

Super Mario Bros. but the Floor is Lava

I Found a Glitch and a Hidden Cutscene in this Romhack

This Mario Game was MADE for me

Super Mario, but you play as Samus

I Got a Speedrun World Record in 3 Tries

They Made Firebars ALIVE

How I Accidentally Got a Speedrun World Record

They turned Mario into a ""Puzzle"" Game

SMB2-J Warpless Speedrun in 21:22.8

I got stuck in a wall for 30 minutes

The FIRST time this has been done in a Speedrun

I've trained my whole life for this moment

You'll never guess why this fight took 20 minutes

The Speedrun where Mario is WAY TOO FAST

The First Mario Romhack I Couldn't Beat

This Mario Game Needs 500 IQ