| 1. |  JTMitchell87 | Think Geek's Portal 2 PotatOS Science Kit Review | 1,217,397 | Review |
| 2. | JTMitchell87 | Neca & Wizkids' Portal 2 Series 2 Turrets Blind Box Opening & Review | 361,664 | Review |
| 3. |  GameStar | Die 10 besten PC-Spiele nach Steam-Reviews | 339,552 | Review |
| 4. |  Lynx Reviewer | ¿Por qué GLaDOS es tan buen personaje? | 289,244 | Review |
| 5. | Dopelives | [Dopefish] Portal 2 Peer Review DLC Co-op with PewDiePie! - Part 2 | 286,430 | Review |
| 6. | The Completionist | Portal | The Completionist | New Game Plus | 272,411 | Review |
| 7. | The Completionist | Portal 2: Video Game Comfort Food | 247,280 | Review |
| 8. | Matthewmatosis | Portal 2 Review | 241,571 | Review |
| 9. | GameStar | Portal 2 - Test / Review von GameStar (Gameplay) (german|deutsch) | 217,904 | Review |
| 10. | Rooster Teeth | This Is... Portal 2: Peer Review DLC | Rooster Teeth | 208,206 | Review |
| 11. | Jeremy Jahns | Portal 2 game review | 204,543 | Review |
| 12. | JTMitchell87 | Neca & Wizkids' Portal 2 Mini Sentry Turrets Blind Box Opening & Review | 198,304 | Review |
| 13. | Nova | Portal 2: Co-op Peer Review DLC Campaign w/ Nova & Kootra Ep.1: Into Testing | 195,179 | Review |
| 14. | GameSpot | GameSpot Reviews - Portal 2 | 172,848 | Review |
| 15. | TotalBiscuit | Salebox - Holiday Sale - December 21st, 2014 | 156,886 | Review |
| 16. | JTMitchell87 | Think Geek's Portal 2 Plush Turret Video Review | 137,751 | Review |
| 17. | Nova | Portal 2: Co-op Peer Review DLC Campaign w/ Nova & Kootra Ep.2: WHAT IS HE DOING TO ME | 115,091 | Review |
| 18. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 9/09 and Ending [HD] | 93,484 | Review |
| 19. |  NjoyEdits | Portal 2 New DLC Peer Review Ending *Spoiler* | 91,775 | Review |
| 20. | GameXplain | Portal 2 Review [HD Video] | 88,538 | Review |
| 21. | JTMitchell87 | Think Geek's Portal 2: Cave Johnson Talking Portrait Review | 81,600 | Review |
| 22. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 1/09 [HD] | 81,196 | Review |
| 23. | NiZZULiVΞ | Portal 2 Wheatley LED Flashlight by ThinkGeek - Unboxing Review | 80,981 | Review |
| 24. | Jesse Cox | Co-Dependent - Portal 2 DLC (Peer Review) /w Aevynne THE END | 80,536 | Review |
| 25. | NiZZULiVΞ | Portal 2 NECA Wizkids Blind Box Sentry Turret Review Unboxing | 79,745 | Review |
| 26. | Nova | Portal 2: Co-op Peer Review DLC Campaign w/ Nova & Kootra Ep.3: WHITE GEL OMG | 78,737 | Review |
| 27. | JTMitchell87 | Neca Player Select: Portal 2 Chell Figure Review | 78,177 | Review |
| 28. | Jesse Cox | Co-Dependent - Portal 2 DLC (Peer Review) /w Aevynne part 4 | 75,712 | Review |
| 29. | Nova | Portal 2: Co-op Peer Review DLC Campaign w/ Nova & Kootra Ep.5: Controlling The Gel | 72,203 | Review |
| 30. | Nova | Portal 2: Co-op Peer Review DLC Campaign w/ Nova & Kootra Ep.4: Get Dat BALL | 70,517 | Review |
| 31. | Nova | Portal 2: Co-op Peer Review DLC Campaign w/ Nova & Kootra Ep.6: The Ending Finale Closure Thing | 69,279 | Review |
| 32. | Zeitgeist Game Review | Portal 2 Review | 66,513 | Review |
| 33. | Jesse Cox | Co-Dependent - Portal 2 DLC (Peer Review) /w Aevynne part 3 | 65,910 | Review |
| 34. |  PavellGameChannel | Portal 2 Perpetual Testing Initiative - Первый взгляд и обзор [Review] | 60,056 | Review |
| 35. | NiZZULiVΞ | Portal 2 NECA Wizkids Blind Box Sentry Turrets COMPLETE SERIES Unboxing Review | 57,917 | Review |
| 36. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 3/09 [HD] | 52,351 | Review |
| 37. | DSPGaming | Portal 2 Peer Review DLC pt23 (final) | 49,629 | Review |
| 38. |  PaperBatVG | Portal 2 "Peer Review" w/ Algol - Chamber 1 | 47,782 | Review |
| 39. |  Streview | פורטל 1 + פורטל 2 - ביקורת - Portal 1 & 2 - Review - Hebrew | 46,959 | Review |
| 40. | Zeitgeist Game Review | Portal 2 Gameplay Trailer | 46,612 | Review |
| 41. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 7/09 [HD] | 46,559 | Review |
| 42. | GameFront | Portal 2 - Peer Review DLC - Art Therapy - Course 6 - Chamber 3 | 42,041 | Review |
| 43. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 8/09 [HD] | 41,993 | Review |
| 44. | GameFront | Portal 2 - Peer Review DLC - Art Therapy - Course 6 - Chamber 2 | 41,509 | Review |
| 45. | PressHeartToContinue | Crazy Late Portal 2 Review! | 39,926 | Review |
| 46. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 2/09 [HD] | 39,215 | Review |
| 47. | Mike Flaminio | Portal 2 Gameplay on the Mac (Review) | 36,610 | Review |
| 48. | CGRundertow | CGRundertow - PORTAL 2 for PlayStation 3 Video Game Review | 36,379 | Review |
| 49. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 63) | 36,145 | Review |
| 50. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 4/09 [HD] | 34,143 | Review |
| 51. | HowcastGaming | Portal 2 "Peer Review" DLC - Art Therapy Room 5/09 [HD] | 33,650 | Review |
| 52. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 43) | 33,224 | Review |
| 53. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 42) | 31,756 | Review |
| 54. | TheMediaCows | Portal 2: "Peer Review" DLC Walkthrough - Part 1 [HD] | 31,047 | Review |
| 55. | kootra | Portal 2- Peer Review DLC w/ Kootra & Nova Part 1 | 29,382 | Review |
| 56. | IGN | Portal 2: Peer Review DLC - Commentary Part 1 | 29,290 | Review |
| 57. | baseball4evPC | Portal 2 | Peer Review DLC | Co-op | Ending Cinematic | 28,729 | Review |
| 58. | The Co-op Mode | Portal 2: Peer Review Part 2 - The Co-op Mode | 27,573 | Review |
| 59. | DSPGaming | Portal 2 Peer Review DLC pt1 | 27,066 | Review |
| 60. |  Gamesweasel | Portal 2 review | 26,379 | Review |
| 61. | MrJarhead | Unearthing The Hilarious And Unexpectedly Dark World of Portal | 26,132 | Review |
| 62. | The Game Station | Top 5 - Nintendo HQ, Alliance vs. Horde, Brink Review, Portal 2 Co-op aaand ? - TGS | 25,687 | Review |
| 63. | Hitler Rants Parodies | Hitler Reviews: Portal 2 | 25,051 | Review |
| 64. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 61) | 24,305 | Review |
| 65. | commanderbacara198 | NECA Portal 2 Atlas Review | 23,980 | Review |
| 66. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 37) | 23,797 | Review |
| 67. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 50) | 23,434 | Review |
| 68. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 60) | 23,403 | Review |
| 69. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 62) | 23,353 | Review |
| 70. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 40) | 22,160 | Review |
| 71. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 48) | 22,157 | Review |
| 72. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 44) | 21,845 | Review |
| 73. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 33) | 21,679 | Review |
| 74. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 52) | 21,625 | Review |
| 75. | Glasseater | Atlas Portal 2 Action Figure Review From NECA Toys | 21,617 | Review |
| 76. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 35) | 21,433 | Review |
| 77. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 57) | 21,426 | Review |
| 78. | The Co-op Mode | Portal 2: Peer Review Part 1 - The Co-op Mode | 21,278 | Review |
| 79. | RageGamingVideos | Portal 2 Fan Chamber Reviews! Frikin Inferno, MinePortal and I Broke It! | 21,253 | Review |
| 80. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 56) | 21,038 | Review |
| 81. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 59) | 20,867 | Review |
| 82. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 53) | 20,841 | Review |
| 83. | wesitron | NECA Portal 2 P-Body Action Figure Review | 20,836 | Review |
| 84. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 32) | 20,764 | Review |
| 85. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 41) | 20,454 | Review |
| 86. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 34) | 20,359 | Review |
| 87. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 58) | 19,963 | Review |
| 88. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 36) | 19,905 | Review |
| 89. | RageGamingVideos | Portal 2 Fan Chamber Reviews! Anti Gravity, Complex Puzzle and What!? | 19,844 | Review |
| 90. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 54) | 19,828 | Review |
| 91. | sportswolf3 | NECA PORTAL 2 CHELL VIDEO GAME ACTION FIGURE TOY REVIEW | 19,693 | Review |
| 92. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 39) | 19,638 | Review |
| 93. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 51) | 19,549 | Review |
| 94. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 47) | 19,330 | Review |
| 95. | totallyradshow | Portal 2 | Best Game of 2011? Gameplay Review | 19,257 | Review |
| 96. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 45) | 19,229 | Review |
| 97. | RageGamingVideos | Portal 2 Fan Chamber Reviews Special! Best Chamber Ever! | 19,094 | Review |
| 98. | StephenPlays | Stephen & Mal: Portal 2 Co-op #12 [PEER REVIEW] | 18,712 | Review |
| 99. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 55) | 18,664 | Review |
| 100. | RageGamingVideos | Portal 2 Fan Chamber Reviews! (Episode 46) | 18,603 | Review |
