| 1. | Portal 2 Tests: Into the Multiverse: Part 1 | 858,730 | Let's Play | Portal 2
|
| 2. | Portal 2 Tests: Into the Multiverse: Part 3 | 422,040 | | Portal 2
|
| 3. | Portal 2 Tests: Into the Multiverse: Part 2 | 300,035 | Let's Play | Portal 2
|
| 4. | Portal 2 Tests: Into the Multiverse: Part 5 | 297,284 | | Portal 2
|
| 5. | Portal 2 Tests: Into the Multiverse: Part 4 | 281,328 | | Portal 2
|
| 6. | You Monster... - Portal Stories: Mel #15 (The End) | 273,858 | | Portal 2
|
| 7. | Portal 2 Tests: Wheatley's Detour | 255,064 | | Portal 2
|
| 8. | Portal 2 #9 (End) — The Part Where He Kills Me | 173,516 | | Portal 2
|
| 9. | Portal 2 Tests: Into the Multiverse: Part 6 | 172,286 | | Portal 2
|
| 10. | Portal 2 Tests: No Money For Chambers | 170,951 | | Portal 2
|
| 11. | Portal 2 Tests: Without Portalgun (1/3) | 170,558 | | Portal 2
|
| 12. | Portal Stories: Mel #1 (Portal 2 Mod) — Good Night | 129,629 | | Portal 2
|
| 13. | Portal 2 Tests: Into The Multiverse Part 7 — The WORST kind of test! | 128,535 | | Portal 2
|
| 14. | Aperture Tag #1 (Portal 2 Mod) — Scientist or Artist? | 123,390 | | Portal 2
|
| 15. | Portal 2 Tests: Lab Rat Theory | 120,449 | | Portal 2
|
| 16. | Portal 2 Tests: 12 Angry Tests (1/4) | 116,087 | | Portal 2
|
| 17. | Portal 2 Tests: Timeless | 111,391 | | Portal 2
|
| 18. | Portal 2 Tests: Designed For Danger (1/4) | 111,134 | | Portal 2
|
| 19. | Portal Stories: Mel #2 (Portal 2 Mod) — Old Reliable | 108,262 | | Portal 2
|
| 20. | Portal 2 Tests: Double Cross | 94,029 | | Portal 2
|
| 21. | Portal 2 Tests: Telekinesis | 93,575 | | Portal 2
|
| 22. | Portal 2 Tests: Wheatley's Sequel | 89,879 | | Portal 2
|
| 23. | Portal 2 Tests: Superman on Steroids | 89,811 | | Portal 2
|
| 24. | Portal 2 Tests: Impossible Geometry | 89,361 | | Portal 2
|
| 25. | Portal 2 Tests: Cosmogony (1/2) | 87,016 | | Portal 2
|
| 26. | Portal 2 Tests: 12 Angry Tests (4/4) | 85,358 | | Portal 2
|
| 27. | Portal 2 Tests: Without Portalgun (2/3) | 82,709 | | Portal 2
|
| 28. | Portal 2 Tests: Designed For Danger (4/4) | 81,020 | | Portal 2
|
| 29. | Portal Stories: Mel #6 (Portal 2 Mod) — Beyond My Range of Hearing | 80,237 | | Portal 2
|
| 30. | Portal 2 Tests: Designed For Danger (3/4) | 78,507 | | Portal 2
|
| 31. | Portal 2 Tests: Wheatley's Deatour V2 | 74,763 | | Portal 2
|
| 32. | Portal 2 Tests: Cubi | 72,870 | | Portal 2
|
| 33. | Portal 2 Tests: 12 Angry Tests (2/4) | 71,853 | | Portal 2
|
| 34. | Portal 2 Tests: Above Aperture (1/3) | 70,880 | | Portal 2
|
| 35. | Portal 2 Tests: Built Without Brains | 70,842 | | Portal 2
|
| 36. | Portal Stories: Mel #3 (Portal 2 Mod) — Secrets | 67,256 | | Portal 2
|
| 37. | Portal 2 Tests: Laser Launch | 66,183 | | Portal 2
|
| 38. | Portal 2 Tests: Sketches | 63,858 | | Portal 2
|
| 39. | Portal 2 Tests: 12 Angry Tests (3/4) | 63,680 | | Portal 2
|
| 40. | Portal 2 #1 — A Piece of Cake | 62,969 | | Portal 2
|
| 41. | Portal 2 Tests: Looking Up | 62,616 | | Portal 2
|
| 42. | Portal 2 Tests: Without Portalgun (3/3) | 62,562 | | Portal 2
|
| 43. | Portal 2 Tests: Cosmogony (2/2) | 62,018 | | Portal 2
|
| 44. | Portal 2 Tests: Perpetual Painting Initiative | 61,350 | | Portal 2
|
| 45. | Portal Stories: Mel #4 (Portal 2 Mod) — Soldier of Science | 60,943 | | Portal 2
|
| 46. | Portal 2 Tests: Batcature Laboratories: Part 1 | 60,018 | | Portal 2
|
| 47. | Aperture Tag #2 (Portal 2 Mod) — Thinking Without Portals | 58,776 | | Portal 2
|
| 48. | Announcements: NEW Channel, Portal 2 Co-op, New Solo Let's Play! | 58,601 | Let's Play | Portal 2
|
| 49. | Portal 2 Tests: The Maze of Destiny | 58,565 | | Portal 2
|
| 50. | Portal 2 Tests: Abandoned Science | 57,356 | | Portal 2
|
| 51. | Portal Stories: Mel #7 (Portal 2 Mod) — Newly Enriched | 56,571 | | Portal 2
|
| 52. | Portal 2 Tests: Supposed To Go At An Angle | 56,110 | | Portal 2
|
| 53. | Portal 2 Tests: Permutations | 55,671 | | Portal 2
|
| 54. | Portal 2 Tests: Office Prank: Part 3 (Horror Community Map) | 55,615 | | Portal 2
|
| 55. | Portal 2 Tests: Echoes | 53,277 | | Portal 2
|
| 56. | Portal 2 Tests: Filtered Testing (1/2) | 52,680 | | Portal 2
|
| 57. | Portal 2 Tests: Yin and Yang | 52,117 | | Portal 2
|
| 58. | Portal 2 Tests: Transfer | 51,643 | | Portal 2
|
| 59. | Portal Stories: Mel #5 (Portal 2 Mod) — This Sign is Radioactive | 51,315 | | Portal 2
|
| 60. | Portal Stories: Mel #11 (Portal 2 Mod) — Botany Blocks Bad Bot's Behavior | 50,241 | | Portal 2
|
| 61. | Aperture Tag #4 (Portal 2 Mod) — Apples and Oranges | 47,737 | | Portal 2
|
| 62. | Portal 2 Tests: Electrophobia (1/2) (Co-op) | 47,504 | | Portal 2
|
| 63. | Portal Stories: Mel #10 (Portal 2 Mod) — Third Time's the Charm | 46,650 | | Portal 2
|
| 64. | Portal 2 Tests: Bridge Burning | 46,629 | | Portal 2
|
| 65. | Portal Stories: Mel #8 (Portal 2 Mod) — Laser Guided Companion | 46,135 | Guide | Portal 2
|
| 66. | Portal 2 Tests: Moonbase Luna-C (1/5) | 45,961 | | Portal 2
|
| 67. | Aperture Tag #3 (Portal 2 Mod) — Relive | 44,763 | | Portal 2
|
| 68. | Portal 2 Tests: Discouragement Fizzler | 44,740 | | Portal 2
|
| 69. | Portal 2 Tests: A Little Something | 43,739 | | Portal 2
|
| 70. | Portal Stories: Mel #9 (Portal 2 Mod) — Flung | 43,535 | | Portal 2
|
| 71. | Portal 2 Tests: Broken Neurons (Co-op) | 42,378 | | Portal 2
|
| 72. | Portal 2 Tests: Ecks Test Chamber | 41,939 | | Portal 2
|
| 73. | Portal Stories: Mel #12 (Portal 2 Mod) — Hoopy | 41,274 | | Portal 2
|
| 74. | Portal 2 Tests: Office Prank: Part 1 (Horror Community Map) | 40,344 | | Portal 2
|
| 75. | Portal 2 Tests: Don't Make Lemonade | 40,161 | | Portal 2
|
| 76. | Portal Stories: Mel #14 (Portal 2 Mod) — Journey of Upwardness | 39,194 | | Portal 2
|
| 77. | Aperture Tag #6 (Portal 2 Mod) — This Was Not Meant to Be | 38,819 | | Portal 2
|
| 78. | Aperture Tag #7 (Portal 2 Mod) — GOTTA GO FAST | 37,165 | | Portal 2
|
| 79. | Portal 2 Tests: Moonbase Luna-C (5/5) | 36,925 | | Portal 2
|
| 80. | Portal 2 Tests: Office Prank: Part 2 (Horror Community Map) | 36,644 | | Portal 2
|
| 81. | Portal Stories: Mel #13 (Portal 2 Mod) — Air Lock | 35,579 | | Portal 2
|
| 82. | Portal 2 Co-op with Patty! | 35,487 | | Portal 2
|
| 83. | Aperture Tag #5 (Portal 2 Mod) — Kindergarten is in Session | 35,484 | | Portal 2
|
| 84. | Portal 2 Tests: Behind The Waterfall | 34,521 | | Portal 2
|
| 85. | Portal 2 Tests: The Winter Testing Initiative (1/2) | 34,076 | | Portal 2
|
| 86. | Portal 2 #5 — Bring Your Daughter To Work Day | 33,931 | | Portal 2
|
| 87. | Portal 2 Tests: Batcature Laboratories: Part 4 — The world is RULED BY CAT PEOPLE! | 33,751 | | Portal 2
|
| 88. | Aperture Tag #8 (Portal 2 Mod) — The Truman Show | 32,958 | Show | Portal 2
|
| 89. | Portal 2 Tests: Moonbase Luna-C (2/5) | 32,678 | | Portal 2
|
| 90. | Portal 2 #6 — I'M A POTATO | 32,464 | | Portal 2
|
| 91. | Portal 2 Tests: Batcature Laboratories: Part 2 | 31,256 | | Portal 2
|
| 92. | Portal 2 Tests: Filtered Testing (2/2) | 30,772 | | Portal 2
|
| 93. | Portal 2 #7 — Combustible LEMONS? | 30,403 | | Portal 2
|
| 94. | Portal 2 #8 — Paradox | 30,231 | | Portal 2
|
| 95. | Portal 2 Tests: Downstairs | 30,012 | | Portal 2
|
| 96. | Aperture Tag #9 (Portal 2 Mod) — My Science! | 29,812 | | Portal 2
|
| 97. | Portal 2 Tests: Moonbase Luna-C (3/5) | 29,343 | | Portal 2
|
| 98. | Portal 2 Tests: Above Aperture (2/3) | 29,213 | | Portal 2
|
| 99. | Aperture Tag #11 (Portal 2 Mod) — Wormhole | 29,089 | | Portal 2
|
| 100. | Aperture Tag #10 (Portal 2 Mod) — The Citranium is a Lie | 28,689 | | Portal 2
|
