| 1. | Crowbcat | Crushed between two portals experiment | 45,511 | |
| 2. |  The Game Theorists | Game Theory: Can You Solve Portal's IMPOSSIBLE Puzzle? (Portal) | 36,481 | |
| 3. | The Game Theorists | Game Theory: Portal's Companion Cube has a Dark Secret | 27,119 | |
| 4. |  SMG4 | Portal M4R10 - If Mario was in...Portal | 22,322 | |
| 5. |  MiawAug | DiKurung Ama Nenek Nenek - Granny Horror Game Indonesia | 20,446 | |
| 6. | Gamehelper | Portal Teaser Trailer | 8,779 | |
| 7. | gameranx | Portal 3: 10 Things We DON'T WANT | 8,420 | |
| 8. |  Manemag | НЕСТАНДАРТНЫЙ PORTAL | 8,174 | |
| 9. | Valve | Portal is Free (Well, it was - now it's just a good deal). | 7,327 | |
| 10. | Nukazooka | Portal vs Half-Life | 6,981 | |
| 11. |  Hoolopee | Mini Portal Gun | 5,812 | |
| 12. | CodyCantEatThis | I Made Portal 3 Because Valve Wouldn't | 5,736 | |
| 13. |  jacksepticeye | PORTAL IN VR | Portal Stories VR (HTC Vive Virtual Reality) | 5,404 | |
| 14. | Obit | BUKA PORTAL DAN PINDAH KE DUNIA LAIN!!! - DEEEER Simulator Indonesia | 3,862 | |
| 15. |  Portal BRX | Transformando um Dual Core em um PC GAMER! | 3,700 | |
| 16. | Alpharad Gold | We Beat Portal | 3,665 | |
| 17. | NVIDIA GeForce | Portal with RTX | World Premiere | 3,568 | |
| 18. | Paracosm | What makes Portal The Best Series EVER!? | 3,475 | |
| 19. | Ossy Flawol | Portal RTX is Shaping Up to be a Disaster. | 3,385 | |
| 20. | Macro | A PORTAL INTO MY MIND | 3,331 | |
| 21. | Smosh Games | GAMES THAT MADE US SMARTERER (Why We're Single) | 3,093 | |
| 22. | People Vs Food | FINAL EPISODE! | PORTAL - Part 5 (React: Let's Plays) | 2,767 | Let's Play |
| 23. | Etra Games | I Made A Game That Teaches Non-Gamers FPS Games (Updated Video In Description) | 2,710 | Vlog |
| 24. |  GameCoach | 포탈 스토리 한눈에 보기 완전판 (Portal Story Full Movie) | 2,684 | |
| 25. | SuperHorrorBro | Portal's Darkest Secrets (Creepy Portal Easter Eggs & Facts) | 2,681 | |
| 26. |  TT Studio News | Rampage Çekiliş Sonuçları | 2,674 | |
| 27. | Bolloxed | Portal - Full Walkthrough | 2,642 | Walkthrough |
| 28. |  Liam Triforce | Portal Retrospective | 2,632 | |
| 29. |  EstubeGaming | البوابات العجيبه | Portal !! 🌌😵 | 2,622 | |
| 30. | OverTheGun | Portal - Ending 'Fight' | 2,565 | |
| 31. | Harry101UK | Portal - Christmas 2014 [unfinished] | 2,513 | |
| 32. | DomPlays | I'M NEVER RIDING IN ANOTHER ELEVATOR! | The Elevator Ritual | 2,352 | |
| 33. | Outside Xtra | 7 Evil Minions You Found Too Adorable to Murder, Almost | 2,323 | |
| 34. | LukassKane | ОТСЫЛКИ К PORTAL ИЗ РАЗНЫХ ИГР |EASTER EGGS| | 2,298 | |
| 35. | Nintendo of America | Portal: Companion Collection - Announcement Trailer - Nintendo Switch | 2,293 | Preview |
| 36. | Harry101UK | Portal - All Heart | 2,235 | |
| 37. | Товарищ Куяш | ВСЕ СМЕРТИ ИЗ Portal 1 и 2 ЗА 2 МИНУТЫ ( АНИМАЦИЯ Портал ) | 2,225 | |
| 38. | Skyrionn | Portal: A History of Aperture (Timeline and Lore) | 2,132 | |
| 39. | OfficialNerdCubed | Nerd³ Completes... Portal | 2,111 | |
| 40. | Ian Boswell | Portal Gun In Half LIfe 1 | 2,077 | |
| 41. |  GamingBolt | Where The Hell Is Portal 3? | 2,028 | |
| 42. |  TheBrainDit | Haydee - ОГО, ВОТ ЭТО СИСЬКИ :) | 2,002 | |
| 43. | Naritsa | Как пройти Portal за 6 минут [Разбор спидрана] | 1,984 | |
| 44. | Hailey Reese | The Mystical Creatures | My HAUNTED House! | Paranormal Storytime.. | 1,980 | |
| 45. | Ghostcharm | Villainpedia: GLaDOS | 1,872 | |
| 46. | Jim Sterling | HAYDEE - Prepare To Robot Boobs | 1,871 | |
| 47. | gameranx | 10 Portal Facts You Probably Didn't Know | 1,809 | |
| 48. | Rocket Sloth | Valve IS NOT DEAD! Portal 3 and Half-Life 3 Could Happen E3 2018 | 1,808 | |
| 49. | Jazzghost | PORTAL EM 2022 AINDA É PERFEITO? | 1,783 | |
| 50. | HISTORY | Ancient Aliens: Mysterious Force Field Generates Pyramid Portal (Season 5) | History | 1,765 | Show |
| 51. | Etra Games | I Modded Portal so Non-Gamers Can Play (Updated Video In Description) | 1,733 | Vlog |
| 52. | Oyunsal Tv | OYUN PORTAL ÇILDIRDI!!! (Mini dizi) | Bir YouTuber'ın hayatı: Küçük Mahmud #4 | 1,699 | |
| 53. | RTGame | Portal is a Timeless Masterpiece | 1,696 | |
| 54. | Smosh Games | GETTING WARPED WITH LIMP NOODLES (Super Mari Fun Time) | 1,643 | |
| 55. | BrawlFan1 | What If Chell Was in Smash? (Moveset Ideas: 106) | 1,637 | |
| 56. | TheWilsonator | Portal Soundtrack- '4000 Degrees Kelvin' | 1,626 | |
| 57. | ViteC ► Play | КУБ - МОЙ ЛУЧШИЙ ДРУГ! ► Portal 1 |1| | 1,603 | |
| 58. | MiawAug | Seperti Sulap - Portal Indonesia Gameplay | 1,592 | |
| 59. | Summoning Salt | World Record Progression: Portal (Inbounds) | 1,592 | |
| 60. | Metalyst | PORTAL | РАЗБОР ТЕОРИЙ | 1,584 | |
| 61. | Bombastic Clips | WHAT EVEN are THESE? | 1,569 | |
| 62. | Davey Gunface | A fun video on Portals OSHA Violations that only destroyed 9 weeks of my life | 1,565 | |
| 63. | The Yogscast | Sanctum Part 1: A weird blend of FPS and Tower Defence | 1,562 | |
| 64. | Нарратор | Как я играл в Portal | 1,550 | |
| 65. | PurpleShep | PURPLE SHEP IS ACTUALLY SMART!? | Portal | #3 | 1,541 | |
| 66. | Marblr | Portal's Rarest Dialogue | Camera Shy | 1,500 | Vlog |
| 67. | Tyler McVicker | The History of Portal | 1,454 | |
| 68. | Майни | НЕСТАНДАРТНЫЙ PORTAL ► ПОРТАЛ | Реакция | 1,429 | |
| 69. | Shesez | Out of Bounds Secrets | Portal - Boundary Break | 1,409 | |
| 70. | Krinios | How I accidentally became a Portal speedrunner | 1,400 | |
| 71. | Msushi | The Portal Speedrun That Doesn't Use Portals | 1,389 | |
| 72. | IRON HORSE CINEMA | Rick and Morty: Live Action Intro | 1,389 | |
| 73. | WhatCulture Gaming | 10 Video Games That KNEW You'd Try To Cheat | 1,376 | |
| 74. | Weegeepie | Luigi Plays: PORTALLL | 1,370 | Let's Play |
| 75. | Harry101UK | Lego Dimensions: Portal - Wheatley Intro | 1,337 | |
| 76. | Msushi | How Speedrunners Beat Portal Without the Portal Gun | 1,335 | |
| 77. | Hutts | How We Are Surviving the Adpocalypse | 1,330 | |
| 78. | penguinz0 | VR Makes Me Sick | 1,307 | |
| 79. | SwankyBox | Portal - How the Portal Gun Actually Works (Not Wormholes!) | SwankyBox | 1,289 | |
| 80. | mrkerk12 | Portal - GLaDOs Boss fight + Credits song | 1,284 | |
| 81. | MiawAug | Makin Susah - Portal - Part 2 Indonesia Gameplay | 1,283 | |
| 82. | EugeneSagaz | УНИТАЗ-УБИЙЦА | 1,260 | |
| 83. | BizarrelyFunny | Portal Gun VS Gravity Gun | 1,222 | |
| 84. | Doobus Goobus | Portal, but she really is a moron. | 1,215 | |
| 85. | Modern Vintage Gamer | Portal on the Nintendo 64 is incredible | 1,200 | |
| 86. | Tyler McVicker | Play Valve's New Game - Portal: Moondust Explained | 1,194 | |
| 87. | Game Maker's Toolkit | Valve's "Secret Weapon" | 1,190 | Show |
| 88. | Press Start To Laugh | What if Chell Talked in Portal? (Parody) | 1,185 | |
| 89. | Msushi | Speedrunning the Half-Life and Portal Games, Back-to-Back (World Record) | 1,185 | |
| 90. | Bramblekit | Portal Turret-Speak | 1,183 | |
| 91. | hrnukeatp | How to trap yourself in Portal level 1? | 1,166 | |
| 92. | DidYouKnowGaming | Valve Developer Talks Portal 3 (Exclusive) | 1,164 | |
| 93. | jackfrags | The Future of VR - Valve HTC Vive Hands on! | 1,156 | |
| 94. |  98DEMAKE | If Portal was made in 1998 | 1,146 | |
| 95. | xXSlyFoxHoundXx | Portal:Ep.1 "I got a Bubble Butt :D" | 1,133 | |
| 96. | IGN | Portal Speedrunner Explains to Valve How He Breaks Their Game | 1,131 | |
| 97. | Blame Truth - The CODfather | My Girlfriend and Portal - Episode 1 | 1,129 | |
| 98. | Syy | What If Steam Closed? | 1,124 | |
| 99. | Metalyst | Portal | Сюжет вкратце | 1,117 | |
| 100. |  Felix von der Laden | Neuer Bewohner für das UFO Aquarium (Hausmeister) | 1,113 | Vlog |
