| 1. | Portal 2 Tests: Lab Rat Theory | 925 | | Portal 2
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| 2. | You Monster... - Portal Stories: Mel #15 (The End) | 738 | | Portal 2
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| 3. | Announcements: NEW Channel, Portal 2 Co-op, New Solo Let's Play! | 653 | Let's Play | Portal 2
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| 4. | Portal 2 Tests: Into the Multiverse: Part 6 | 582 | | Portal 2
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| 5. | Portal 2 Tests: Into the Multiverse: Part 1 | 526 | Let's Play | Portal 2
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| 6. | Portal 2 Tests: Wheatley's Detour | 482 | | Portal 2
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| 7. | Portal 2 #9 (End) — The Part Where He Kills Me | 366 | | Portal 2
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| 8. | Portal 2 Tests: Into The Multiverse Part 7 — The WORST kind of test! | 335 | | Portal 2
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| 9. | Portal 2 Tests: No Money For Chambers | 334 | | Portal 2
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| 10. | Portal 2 Tests: Into the Multiverse: Part 4 | 331 | | Portal 2
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| 11. | Portal 2 Tests: Into the Multiverse: Part 3 | 304 | | Portal 2
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| 12. | Portal 2 Tests: Impossible Geometry | 301 | | Portal 2
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| 13. | Portal Stories: Mel #1 (Portal 2 Mod) — Good Night | 290 | | Portal 2
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| 14. | Portal 2 Tests: Designed For Danger (4/4) | 274 | | Portal 2
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| 15. | Portal 2 Tests: Into the Multiverse: Part 5 | 247 | | Portal 2
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| 16. | Portal 2 Tests: Designed For Danger (1/4) | 232 | | Portal 2
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| 17. | Portal 2 Tests: Into the Multiverse: Part 2 | 230 | Let's Play | Portal 2
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| 18. | Portal 2 #1 — A Piece of Cake | 228 | | Portal 2
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| 19. | Portal Stories: Mel #4 (Portal 2 Mod) — Soldier of Science | 222 | | Portal 2
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| 20. | Portal 2 Tests: 12 Angry Tests (2/4) | 222 | | Portal 2
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| 21. | Portal 2 Tests: Double Cross | 220 | | Portal 2
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| 22. | Portal 2 Tests: Office Prank: Part 3 (Horror Community Map) | 214 | | Portal 2
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| 23. | Portal Stories: Mel #2 (Portal 2 Mod) — Old Reliable | 212 | | Portal 2
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| 24. | Portal 2 Tests: Office Prank: Part 1 (Horror Community Map) | 208 | | Portal 2
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| 25. | Portal 2 Tests: Wheatley's Sequel | 205 | | Portal 2
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| 26. | Portal 2 Tests: Permutations | 202 | | Portal 2
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| 27. | Portal 2 Tests: 12 Angry Tests (1/4) | 201 | | Portal 2
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| 28. | Portal 2 Tests: Designed For Danger (3/4) | 200 | | Portal 2
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| 29. | Portal 2 Tests: Telekinesis | 198 | | Portal 2
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| 30. | Portal 2 Tests: Cosmogony (1/2) | 194 | | Portal 2
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| 31. | Portal 2 Tests: 12 Angry Tests (4/4) | 192 | | Portal 2
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| 32. | Aperture Tag #1 (Portal 2 Mod) — Scientist or Artist? | 182 | | Portal 2
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| 33. | Portal Stories: Mel #12 (Portal 2 Mod) — Hoopy | 181 | | Portal 2
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| 34. | Portal HIGHLIGHTS | 171 | Let's Play | Portal 2
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| 35. | Portal 2 Tests: The Maze of Destiny | 169 | | Portal 2
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| 36. | Portal 2 Tests: 12 Angry Tests (3/4) | 159 | | Portal 2
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| 37. | Portal 2 Tests: Filtered Testing (1/2) | 156 | | Portal 2
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| 38. | Portal 2 Tests: Without Portalgun (1/3) | 154 | | Portal 2
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| 39. | Portal 2 Tests: Laser Launch | 152 | | Portal 2
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| 40. | Portal Stories: Mel #6 (Portal 2 Mod) — Beyond My Range of Hearing | 151 | | Portal 2
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| 41. | Portal 2 Tests: Yin and Yang | 149 | | Portal 2
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| 42. | Portal 2 Tests: Looking Up | 146 | | Portal 2
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| 43. | Portal 2 Tests: Office Prank: Part 2 (Horror Community Map) | 144 | | Portal 2
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| 44. | Portal 2 Tests: Superman on Steroids | 142 | | Portal 2
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| 45. | Portal Stories: Mel #14 (Portal 2 Mod) — Journey of Upwardness | 141 | | Portal 2
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| 46. | Portal 2 #6 — I'M A POTATO | 138 | | Portal 2
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| 47. | Portal Stories: Mel #10 (Portal 2 Mod) — Third Time's the Charm | 138 | | Portal 2
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| 48. | Portal Stories: Mel #5 (Portal 2 Mod) — This Sign is Radioactive | 129 | | Portal 2
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| 49. | Portal 2 Tests: Timeless | 128 | | Portal 2
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| 50. | Portal 2 Tests: Supposed To Go At An Angle | 127 | | Portal 2
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| 51. | Portal 2 #2 — So Salty | 125 | | Portal 2
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| 52. | Portal 2 Tests: Discouragement Fizzler | 124 | | Portal 2
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| 53. | Portal 2 Tests: Filtered Testing (2/2) | 124 | | Portal 2
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| 54. | Portal 2 Tests: Without Portalgun (2/3) | 121 | | Portal 2
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| 55. | Portal Stories: Mel #3 (Portal 2 Mod) — Secrets | 119 | | Portal 2
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| 56. | Portal 2 Tests: Cosmogony (2/2) | 119 | | Portal 2
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| 57. | Portal 2 #8 — Paradox | 117 | | Portal 2
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| 58. | Portal 2 #3 — Turret Mating Call | 116 | | Portal 2
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| 59. | Portal Stories: Mel #11 (Portal 2 Mod) — Botany Blocks Bad Bot's Behavior | 113 | | Portal 2
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| 60. | Portal 2 Tests: Perpetual Painting Initiative | 113 | | Portal 2
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| 61. | Portal 2 Tests: Built Without Brains | 112 | | Portal 2
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| 62. | Aperture Tag #3 (Portal 2 Mod) — Relive | 112 | | Portal 2
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| 63. | Aperture Tag #2 (Portal 2 Mod) — Thinking Without Portals | 111 | | Portal 2
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| 64. | Portal 2 Tests: Echoes | 110 | | Portal 2
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| 65. | Aperture Tag #7 (Portal 2 Mod) — GOTTA GO FAST | 108 | | Portal 2
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| 66. | Portal 2 Tests: Sketches | 107 | | Portal 2
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| 67. | Portal Stories: Mel #9 (Portal 2 Mod) — Flung | 103 | | Portal 2
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| 68. | Portal 2 #7 — Combustible LEMONS? | 103 | | Portal 2
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| 69. | Portal 2 Tests: Pinball Machine INSIDE Portal 2! | 102 | | Portal 2
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| 70. | Portal 2 Tests: Moonbase Luna-C (2/5) | 102 | | Portal 2
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| 71. | Aperture Tag #8 (Portal 2 Mod) — The Truman Show | 99 | Show | Portal 2
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| 72. | Portal Stories: Mel #13 (Portal 2 Mod) — Air Lock | 98 | | Portal 2
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| 73. | Portal 2 Tests: Transfer | 98 | | Portal 2
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| 74. | Portal Stories: Mel #8 (Portal 2 Mod) — Laser Guided Companion | 97 | Guide | Portal 2
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| 75. | Portal 2 Tests: Moonbase Luna-C (1/5) | 97 | | Portal 2
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| 76. | Portal 2 Tests: Above Aperture (1/3) | 97 | | Portal 2
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| 77. | Aperture Tag #6 (Portal 2 Mod) — This Was Not Meant to Be | 96 | | Portal 2
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| 78. | Portal 2 Tests: Cubi | 93 | | Portal 2
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| 79. | Portal 2 Tests: Moonbase Luna-C (5/5) | 92 | | Portal 2
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| 80. | Portal 2 Tests: Wheatley's Deatour V2 | 88 | | Portal 2
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| 81. | Portal 2 Tests: Without Portalgun (3/3) | 83 | | Portal 2
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| 82. | Portal Stories: Mel #7 (Portal 2 Mod) — Newly Enriched | 83 | | Portal 2
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| 83. | Portal 2 #5 — Bring Your Daughter To Work Day | 80 | | Portal 2
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| 84. | Portal 2 Tests: The Winter Testing Initiative (1/2) | 79 | | Portal 2
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| 85. | Aperture Tag #4 (Portal 2 Mod) — Apples and Oranges | 79 | | Portal 2
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| 86. | Portal 2 Tests: Cubes and Funnels — PORTAL COMMUNITY TESTS ARE BACK, BABY! | 79 | | Portal 2
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| 87. | Portal 2 Tests: Ecks Test Chamber | 78 | | Portal 2
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| 88. | Portal 2 Tests: Time Puzzle Concepts / Pushy Laser | 76 | | Portal 2
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| 89. | Portal 2 Tests: Above Aperture (3/3) | 76 | | Portal 2
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| 90. | Portal 2 Tests: Downstairs | 75 | | Portal 2
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| 91. | Portal 2 Tests: Batcature Laboratories: Part 1 | 74 | | Portal 2
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| 92. | Portal 2 Co-op with Patty! | 73 | | Portal 2
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| 93. | Portal 2 Tests: Rube Goldberg | 71 | | Portal 2
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| 94. | Portal 2 Tests: Don't Make Lemonade | 70 | | Portal 2
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| 95. | Portal 2 Tests: Batcature Laboratories: Part 3 | 69 | | Portal 2
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| 96. | Portal 2 Tests: Abandoned Science | 68 | | Portal 2
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| 97. | Portal 2 Tests: Dilapidation: Part 4 | 68 | | Portal 2
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| 98. | Portal 2 Tests: Security Turret — Burn, Baby, Burn! Turret Inferno! | 67 | | Portal 2
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| 99. | Portal 2 Tests: UNREAL CHAMBER 01 | 67 | | Portal 2
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| 100. | Portal 2 Tests: Batcature Laboratories: Part 2 | 66 | | Portal 2
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