| 1. |  TheMediaCows | Portal 2: End Credits Song 'Want You Gone' by Jonathan Coulton [1080p HD] | 56,340 | |
| 2. |  Harry101UK | Portal - Meet The Cores 3 | 25,952 | |
| 3. | Harry101UK | Friendly Frank | Animating Your Comments [#3] | 25,257 | |
| 4. |  Marmok | Язык жестов (VR) | 24,162 | |
| 5. | Harry101UK | Rowing Home 2 | Animating Your Comments [#2] | 21,919 | |
| 6. | Harry101UK | Portal - This Is Aperture | 21,436 | |
| 7. | ParashockX | If this video reaches 20 million views, I actually show my face | 18,392 | |
| 8. |  jacksepticeye | THE FUTURE IS NOW! | HTC Vive Virtual Reality | 17,615 | |
| 9. | Harry101UK | Portal - Meet The Cores 2 | 17,430 | |
| 10. | Harry101UK | Portal - The Wheatley Song | 17,069 | |
| 11. | Smosh Games | JUMPING THROUGH PORTALS (Gametime w/ Smosh) | 16,271 | |
| 12. | jacksepticeye | WE PUT A PORTAL ON THE MOON | Portal 2 - Part 5 (ENDING) | 15,456 | Walkthrough |
| 13. | Harry101UK | Portal - If I Were A Core | 15,375 | |
| 14. | DanTDM | THE INCREDIBLE VIRTUAL REALITY LAB!! | 15,112 | |
| 15. |  LEMMiNO | Top 10 Facts - Portal | 14,914 | |
| 16. | GameXplain | Portal 2: Ending, Credits Song [HD] | 14,779 | |
| 17. | GameXplain | Portal 2: Final Boss, Ending, Credits Song [HD] | 13,946 | |
| 18. | Harry101UK | Are You Dead? | Animating Your Comments [#1] | 13,316 | |
| 19. | Harry101UK | Portal - The Pit Song | 12,954 | |
| 20. | Markiplier | GREAT SUCCESS!! | Portal 2 - Ep 2 | 11,962 | |
| 21. | Harry101UK | Portal 2 - Going Home | 11,770 | |
| 22. | jacksepticeye | WHERE'S MY CAKE!? | Portal 2 - Part 1 | 11,618 | Walkthrough |
| 23. |  PewDiePie | FREAKY CHICKEN PORTAL OF DOOM AND FRIENDSHIP! - Portal 2: Coop: Custom Maps - Part 1 - Pewds&Cry | 10,925 | |
| 24. | Valve | Aperture Investment Opportunity #4: "Boots" | 10,912 | |
| 25. | Harry101UK | Portal - Meet The Cores 1 | 10,327 | |
| 26. | Harry101UK | Dumb Ways To Die - Portal Edition | 10,199 | |
| 27. | Harry101UK | Portal - Detach The Wheatley Core | 9,987 | |
| 28. | Valve | Portal 2 Teaser Trailer | 9,795 | |
| 29. | The Game Theorists | Game Theory: Portal 2, Does Chell DIE? | 9,701 | |
| 30. | jacksepticeye | OLD SCHOOL COOL | Portal Stories: Mel #1 | 9,604 | |
| 31. | Smosh Games | PORTAL (Honest Game Trailers) | 9,553 | Preview |
| 32. | Harry101UK | Portal - GLaDOS Is To Blame | 9,212 | |
| 33. | Harry101UK | Portal - Making Science | 9,102 | |
| 34. | 2Snacks | Two Best Sisters Play Portal 2 | 8,862 | |
| 35. | jacksepticeye | BROTHERLY LOVE | Portal 2 Co-Op #1 | 8,769 | |
| 36. | jacksepticeye | NOW WE'RE BOTH POTATOES | Portal 2 - Part 3 | 8,754 | Walkthrough |
| 37. | jacksepticeye | GLaDOS KEEPS CALLING ME FAT | Portal 2 - Part 2 | 8,406 | Walkthrough |
| 38. | jacksepticeye | BURN LIFE'S HOUSE DOWN WITH LEMONS | Portal 2 - Part 4 | 8,359 | Walkthrough |
| 39. | DanAndPhilGAMES | Portal 2 Co-op BLINDFOLDED | 8,166 | |
| 40. | Harry101UK | Portal - The Sound Of Science | 8,034 | |
| 41. | Harry101UK | Portal - Wheatley's Rap | 7,849 | |
| 42. | WilbosWorld | Portal 2 Alternate Ending (Contains Spoilers) | 7,808 | |
| 43. | PewDiePie | SCHRÖDINGER AND TESLA STYLE! - Portal 2: Coop: Custom Maps - Part 4 | 7,805 | |
| 44. | PewDiePie | YOU SHOOT! - Portal 2 (Pewds Animated) #3 | 7,513 | |
| 45. | People Vs Food | PORTAL (Teens React: Gaming) | 7,446 | |
| 46. | Valve | Aperture Investment Opportunity #3: "Turrets" | 7,379 | |
| 47. | Markiplier | NOW YOU'RE THINKING WITH PORTALS... | Portal 2 - Ep 3 | 7,364 | |
| 48. | Lenay | 2 ROBOTS ENAMORADOS!! ❤️ - lele | 6,953 | |
| 49. | Harry101UK | Portal - Defective | 6,756 | |
| 50. | Valve | Portal 2 Perpetual Testing Initiative | 6,559 | |
| 51. | Bolloxed | PORTAL 2 - Full Game Walkthrough | 6,458 | Walkthrough |
| 52. | jacksepticeye | FLYING TO SUCCESS | Portal 2 Co-Op #2 | 6,370 | |
| 53. | DoodleChaos | If Portal 2 was a Rhythm Game (Synchronized Music Map) | 6,200 | |
| 54. | Harry101UK | Portal - Hello | 5,924 | |
| 55. | Syy | 10 Things You Didn't Know About Portal 2 | 5,704 | |
| 56. | Harry101UK | Portal - Carol Of The Turrets | 5,686 | |
| 57. | Valve | Portal 2 - Full Co-op Trailer | 5,624 | Preview |
| 58. | jacksepticeye | PORTAL 2 WITH MY GIRLFRIEND | Portal 2 Co-op w/ Gab | 5,450 | Walkthrough |
| 59. | ViteC ► Play | ЛУННЫЙ ФИНАЛ ► Portal 2 |7| | 5,271 | |
| 60. | Harry101UK | Portal - You Wouldn't Know | Music Video | 5,194 | |
| 61. | Master Play | ВСЕ ГРЕХИ И ЛЯПЫ игры "PORTAL 2" | ИгроГрехи | 5,163 | |
| 62. | Harry101UK | Portal - The Harlem Shake | 5,069 | |
| 63. | Valve | Propulsion Gel | 5,050 | |
| 64. | Michael Yanni | DemonStrate - Portal Done Pro - Speedrun - 9:25.567 | 4,897 | |
| 65. | PewDiePie | SECRET GENIUSES PLAYS: Portal 2: Coop: Custom Maps - Part 3 | 4,877 | Let's Play |
| 66. | InTheLittleWood | Steam Summer Sale - Portal 2 (Win A Copy) | 4,854 | |
| 67. | ParashockX | Thank you | 4,825 | |
| 68. | PewDiePie | I LOVE YOU. Portal 2 - (Pewds Animated) #2 | 4,824 | |
| 69. | Lenay | TRABAJAMOS MEJOR JUNTOS 🙈 | 4,801 | |
| 70. | TotalBiscuit | WTF Is... - Portal 2 (WTF Am I Doing Edition) | 4,776 | |
| 71. | Lenay | GERMAN ESTA CONVIRTIENDOSE EN UN ROBOT!! 🙀 - lele | 4,775 | |
| 72. | HALF PEEPS | Portal 3 | Trailer | 4,747 | Preview |
| 73. | Chris DePrisco | Portal 2: Want You Gone - Played with Fiber Laser | 4,604 | |
| 74. | jacksepticeye | WE DEFINITELY KNOW WHAT WE'RE DOING | Portal 2 Co-Op #4 | 4,541 | |
| 75. | GameGrumps | Portal 2: Expanding the Brain - PART 1 - Game Grumps | 4,506 | |
| 76. | videogamedunkey | Portal 2 : World Record | 4,463 | |
| 77. | Shesez | Off Camera Secrets | Portal 2 - Boundary Break | 4,455 | |
| 78. |  MiawAug | Bertualang Antara Dimensi - Portal Reloaded Indonesia - Part 1 | 4,372 | |
| 79. | Leadhead | Portal 2 - The Moron Theory | 4,357 | |
| 80. | Xander Rey Gaming | Portal 2 End Turret Orchestra/Song/Opera Ft. King Turret! | 4,353 | |
| 81. | Syy | Top 5 Plot Holes In Portal 2! | 4,304 | |
| 82. | Smosh Games | RAGING WITH PORTAL (Game Bang) | 4,212 | |
| 83. | Murdoink | Cave Johnson Quotes from Portal 2 DLC | 4,032 | |
| 84. | Markiplier | TEAMING UP WITH SHODLEECH | Portal 2 - Ep 1 | 3,979 | |
| 85. | jacksepticeye | SPRAYING GOO EVERYWHERE | Portal Stories: Mel #3 | 3,974 | |
| 86. | jacksepticeye | CUBES SOLVE EVERYTHING | Portal Stories: Mel #2 | 3,957 | |
| 87. | Harry101UK | Portal Nightmares | 3,946 | |
| 88. | Harry101UK | Portal - This Is Aperture (Remake) | 3,908 | |
| 89. | SpaceHamster | Top 5 Creepy Theories in Video Games! - SpaceHamster | 3,880 | |
| 90. | The Yogscast | Yogscast - Portal 2: Co-op 1 - Team Building 1-2 | 3,851 | |
| 91. | Harry101UK | Portal 2 - Wheatley Through The Whole Game | 3,830 | |
| 92. | Harry101UK | Portal - The Android Hell Blues [feat. The Stupendium] | 3,799 | |
| 93. | jacksepticeye | SHOT BLOCKED | Portal 2 Co-Op #3 | 3,791 | |
| 94. | Deadwater Gaming | If Portal 2 was Written by a Bot | 3,753 | |
| 95. | TrueChak | КАК МЫ ПРОШЛИ 3 РАНДОМНЫЕ КООП ИГРЫ НА ВСЕ 100% ДОСТИЖЕНИЙ (АЧИВОК) - (TrueChak, Dankwist) | 3,700 | |
| 96. | Valve | Portal 2 Launch TV Ad | 3,623 | |
| 97. | GameGrumps | Portal 2: Orange and Blue - PART 1 - Game Grumps | 3,599 | |
| 98. | Harry101UK | Portal - What Does The Chell Say? | 3,498 | |
| 99. |  Zangado | PORTAL 1 e 2 : Vale ou Não a Pena Jogar!? | 3,396 | |
| 100. | Harry101UK | Portal - Turret Funeral | 3,349 | |
