| 301. | Mario Party Superstars: Redemption | 46 | | Mario Party Superstars
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| 302. | The Story Behind Oiram | 46 | | Mario Bros.
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| 303. | OiramOiram12345 and the Shadowreavers- Part 4 | 46 | | Super Mario 64
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| 304. | OiramOiram12345 and the Shadowreavers- Part 8 | 46 | | Super Mario 64
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| 305. | Two Years On Youtube | 46 | | Super Mario 64
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| 306. | Mario's Raceway Takeover! (Episode 1) | 46 | Show | Mario Kart 64
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| 307. | The Cosmic Crystals III: The End of the Star World -Part 12 | 46 | | Super Mario 64
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| 308. | Super Mario 64 Bloopers- Oiram is Back! [REUPLOAD] | 46 | | Super Mario 64
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| 309. | Ztarragus's Island -Episode 13 | 46 | Show | Super Mario 64
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| 310. | Ztarragus's Island -Episode 4 | 47 | | Super Mario 64
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| 311. | The Cosmic Crystals III: The End of the Star World -Part 3 [REUPLOAD] | 47 | | Super Mario 64
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| 312. | MarioMario54321's HORROR Halloween Special! (2010) | 47 | |
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| 313. | Wario Gets Beaten Up! | 61 | |
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| 314. | Merry Christmas! (2010) | 47 | | Super Mario 64
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| 315. | OiramOiram12345 and the Shadowreavers- Part 7 | 48 | | Super Mario 64
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| 316. | Let's Play Super Smash Bros. Ultimate Online! #5 | 48 | Let's Play | Super Smash Bros. Ultimate
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| 317. | (Not 300th Anymore) The 300th Video Spectacular!!! [REUPLOAD] | 48 | | Super Mario 64
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| 318. | MM54321 Q&A - (Part 1) MM Answers Questions and Provides Commentary on Content! | 50 | |
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| 319. | Mario Kart 8 Deluxe LIVESTREAM Online! #1 | 48 | | Mario Kart 8 Deluxe
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| 320. | Paper Mario: The Origami King Livestream HIGHLIGHTS!! | 48 | | Paper Mario: The Origami King
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| 321. | Ztarragus's Island -Episode 7 | 48 | | Super Mario 64
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| 322. | SM64 Bloopers: Gloves, Bots and Battles! [REUPLOAD] | 48 | | Super Mario 64
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| 323. | The Cosmic Crystals III: The End of the Star World -Part 16 | 48 | | Super Mario 64
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| 324. | Super Mario 64 Bloopers- Dermatomeculidus- Part 2 | 49 | | Super Mario 64
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| 325. | OiramOiram12345 and the Shadowreavers- Part 9 | 49 | | Super Mario 64
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| 326. | OiramOiram12345 and the Dark Star X - Part 10 [REUPLOAD] | 49 | | Super Mario 64
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| 327. | IGIUL! (Full + Creator Commentary) | 67 | |
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| 328. | Wall-E Visits the Mushroom Kingdom | 49 | | Super Mario 64
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| 329. | SM64 Bloopers: The Revenge of the Monkey | 49 | | Super Mario 64
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| 330. | The Cosmic Crystals- Part 10 | 49 | | Super Mario 64
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| 331. | Frozin Solid -Part 3 | 50 | | Super Mario 64
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| 332. | Mario Bloopers: Lavender Town (Part 4!?) | 50 | |
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| 333. | OiramOiram12345 and the Dark Star X - Part 26 [REUPLOAD] | 50 | | Paper Mario: The Thousand-Year Door
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| 334. | OiramOiram12345 and the Shadowreavers- Part 6 | 51 | | Super Mario 64
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| 335. | Mario Party Superstars: Halloween at Horror Land | 51 | | Mario Party Superstars
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| 336. | Trapped in the Bermuda Triangle- Part 3 | 52 | |
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| 337. | The Cosmic Crystals III: The End of the Star World -Part 1 [REUPLOAD] | 52 | | Super Mario 64
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| 338. | Super Mario 64 Bloopers: The Lunar Eclipse -Part 2 [REUPLOAD] | 52 | | Super Mario 64
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| 339. | Highlights from Mario Party Superstars Stream! The Wrath of Warukio | 52 | | Mario Party Superstars
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| 340. | Trapped in the Bermuda Triangle- Part 7 | 53 | |
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| 341. | The Cosmic Crystals II: Mastar's Revenge -Part 3 | 53 | | Super Mario 64
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| 342. | The Moon World - Part 1: The Darkness Unleashed [REUPLOAD] | 53 | | Super Mario Galaxy 2
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| 343. | Roleplay with Lily in Super Mario 64! [REUPLOAD] | 53 | | Super Mario 64
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| 344. | Trapped in the Bermuda Triangle- Part 4 | 53 | |
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| 345. | Mario Party 3 Bloopers: Waluigi's Island! (Part 2) [REUPLOAD] | 53 | | Mario Party 3
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| 346. | The Cosmic Crystals III: The End of the Star World -Part 15 | 53 | |
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| 347. | The Cosmic Crystals IV: Zythurvia -Part 3 | 53 | | Super Mario 64
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| 348. | Trapped in the Bermuda Triangle- Part 2 | 53 | |
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| 349. | Super Mario 64 Bloopers- Luvbi | 55 | | Super Mario 64
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| 350. | Merry Christmas, MarioMario54321! -Episode 1 | 55 | | Super Mario 64
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| 351. | SM64 Bloopers: B-Phone- Part 2 | 55 | | Super Mario 64
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| 352. | Marjo and Marko, Explained! | 73 | |
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| 353. | Super Mario 64 Bloopers- Luvbi's Return -Part 1 | 56 | | Super Mario 64
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| 354. | Back to the Fourth Dimension - Part 1 [REUPLOAD] | 56 | | Super Mario 64
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| 355. | This Game Made Me Depressed | 63 | |
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| 356. | The Cosmic Crystals- Part 12 | 56 | | Super Mario 64
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| 357. | Super Mario Galaxy 64 Texture Pack- Updated! | 56 | Vlog | Super Mario 64
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| 358. | IGIUL TWO!! (Part 1) [REUPLOAD] | 56 | | Super Mario 64
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| 359. | Ztarragus's Island -Episode 3 | 56 | | Mario Bros.
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| 360. | SM64 Bloopers: B-Phone- Part 1 | 57 | | Super Mario 64
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| 361. | Super Mario 3D World + Bowser's Fury LIVESTREAM (Part 1.5) | 57 | | Super Mario 3D World Bowser's Fury
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| 362. | OiramOiram12345 and the Shadowreavers- Part 5 | 57 | | Super Mario 64
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| 363. | Two Thousand Subscribers! | 57 | |
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| 364. | Into the Fourth Dimension - Part 2 [REUPLOAD] | 58 | | Super Mario 64
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| 365. | Super Mario 3D World + Bowser's Fury Livestream Highlights | 58 | | Super Mario 3D World Bowser's Fury
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| 366. | Mario Bloopers: Revenge of the Piranha Plants [REUPLOAD] | 59 | | Super Mario Bros.
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| 367. | Super Mario 64 Bloopers: Frozin's Final Frostbite | 59 | | Super Mario 64
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| 368. | Mario VS Oiram 2: Oiram's Revenge (FULL + NEW ENDING!) | 64 | |
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| 369. | The Cosmic Crystals- Part 13 | 59 | | Super Mario 64
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| 370. | Mario's Raceway Takeover! (Episode 5) | 60 | Show | Mario Kart 64
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| 371. | *8 Years Later!* Twenty-leven [REUPLOAD] | 60 | | Super Mario 64
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| 372. | Super Mario 64 Bloopers- BandyKao7's Plan | 60 | | Super Mario 64
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| 373. | The Moon World - Part 5B: Whole Reversal (Full Moon Version) | 61 | | Super Mario Land 2: 6 Golden Coins
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| 374. | Frozin Solid -Part 1 | 61 | | Super Mario 64
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| 375. | Mario Party 3 Bloopers: The Wrath of Willy (Part 2) | 61 | | Mario Party 3
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| 376. | Super Mario Galaxy 64- Ice Mario! | 61 | | Super Mario Galaxy
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| 377. | Super Mario 64 Bloopers: The Lunar Eclipse -Part 1 [REUPLOAD] | 61 | | Super Mario 64
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| 378. | Crazy Hand in Super Smash Bros. 64 | 61 | | Super Smash Bros.
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| 379. | Mario Bloopers- The Bet(2) | 62 | | Mario Bros.
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| 380. | Ztarragus's Island -Episode 2 | 62 | Show | Super Mario Bros.
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| 381. | OiramOiram12345 and the Shadowreavers- Part 10 | 62 | | Super Mario 64
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| 382. | SM64 Bloopers: Time Two: Deleted Scenes | 62 | | Super Mario 64
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| 383. | Mario Goes To Skate City [Part I: Life Is A Highway] [REUPLOAD] | 63 | | Skate City
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| 384. | MarioMario54321's Christmas Carol: Episode 1 | 63 | | Super Mario 64
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| 385. | One Thousand Subscribers! | 63 | |
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| 386. | Master Hand City -Part 3 | 63 | |
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| 387. | Super Mario 64 Bloopers- Security System (Part 2) | 63 | | Super Mario 64
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| 388. | OiramOiram12345 and the Shadowreavers- Part 3 | 63 | | Super Mario 64
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| 389. | The Cosmic Crystals- Part 14 | 64 | | Super Mario 64
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| 390. | Crazy Hand Vegas -Part 1 | 64 | |
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| 391. | The Cosmic Crystals- Part 6 | 64 | | Super Mario 64
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| 392. | (Not 100th Anymore) The 100th Video Spectacular!!!!! [REUPLOAD] | 64 | | Super Mario 64
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| 393. | Mario Bloopers: Lavender Town (Part 2) | 64 | |
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| 394. | Super Mario 64 Bloopers- The Hell Tournament- Part 2 | 65 | | Super Mario 64
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| 395. | Sonic The Hedgehog: Metal Sonic with Music! | 65 | | Sonic the Hedgehog
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| 396. | MarioMario54321's Halloween Special (2010) | 66 | | Super Mario 64
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| 397. | MarioMario54321's HORROR Halloween Special (2008) | 66 | | Mario Bros.
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| 398. | The Cosmic Crystals II Mastar's Revenge -Part 1 [REUPLOAD] | 66 | | Super Mario 64
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| 399. | Dr. Mario Wonder - NES Game ROM Hack by MarioMario54321 | 87 | |
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| 400. | IGIUL TWO!! (Part 3) | 67 | | Super Mario 64
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