| 1. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Steps - 10 Steps) | 4,267 | Walkthrough | Portal
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| 2. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Portals - 7 Portals) | 3,218 | Walkthrough | Portal
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| 3. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Steps - 10 Steps) | 3,099 | Walkthrough | Portal
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| 4. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 13 | 2,941 | Walkthrough | Portal
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| 5. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 15 | 1,956 | Walkthrough | Portal
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| 6. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Portals - 5 Portals) | 1,909 | Walkthrough | Portal
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| 7. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 18 (Least Steps - 85 Steps) | 1,873 | Walkthrough | Portal
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| 8. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Steps - 150 Steps) | 1,818 | Walkthrough | Portal
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| 9. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 14 | 1,440 | Walkthrough | Portal
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| 10. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 16 | 1,371 | Walkthrough | Portal
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| 11. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 18 | 1,354 | Walkthrough | Portal
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| 12. | Portal Walkthrough - Part 11 - The Turret Chamber | 1,276 | Walkthrough | Portal
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| 13. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 15 Part 2 | 1,207 | Walkthrough | Portal
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| 14. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Steps - 30 Steps) | 1,169 | Walkthrough | Portal
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| 15. | Portal Walkthrough - Part 9 - Deadly Pistons | 1,141 | Walkthrough | Portal
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| 16. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Time - 1:27) | 1,093 | Walkthrough | Portal
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| 17. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 17 | 1,084 | Walkthrough | Portal
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| 18. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Time - 1:10) | 1,055 | Walkthrough | Portal
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| 19. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Steps - 40 Steps) | 1,041 | Walkthrough | Portal
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| 20. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Time - 0:52) | 873 | Walkthrough | Portal
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| 21. | Portal Advanced Walkthrough Fling out takes Vol 1: Test Chambers 13-15 | 797 | Walkthrough | Portal
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| 22. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Steps - 75 Steps) | 713 | Walkthrough | Portal
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| 23. | Portal Walkthrough - The Advanced Test Chambers - Test Chamber 17 Part 2 | 711 | Walkthrough | Portal
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| 24. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Time - 0:19) | 694 | Walkthrough | Portal
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| 25. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Steps - 20 Steps) | 684 | Walkthrough | Portal
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| 26. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Portals - 14 Portals) | 645 | Walkthrough | Portal
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| 27. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Portals - 2 Portals) | 640 | Walkthrough | Portal
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| 28. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Time - 1:45) | 627 | Walkthrough | Portal
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| 29. | Portal Advanced Walkthrough Fling out takes Vol 2: Test Chamber 16 | 574 | Walkthrough | Portal
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| 30. | Portal Walkthrough - Part 8 - The Final Test | 531 | Walkthrough | Portal
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| 31. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Time - 0:10) | 517 | Walkthrough | Portal
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| 32. | Portal Walkthrough - Part 1 - Between Two Points | 464 | Walkthrough | Portal
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| 33. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Time - 0:40) | 457 | Walkthrough | Portal
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| 34. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Portals - 23 Portals) | 455 | Walkthrough | Portal
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| 35. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Portals - 4 Portals) | 449 | Walkthrough | Portal
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| 36. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Time - 0:54) | 443 | Walkthrough | Portal
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| 37. | Portal Advanced Walkthrough Fling out takes Vol 3: Test Chamber 17-18 | 429 | Walkthrough | Portal
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| 38. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Portals - 6 Portals) | 414 | Walkthrough | Portal
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| 39. | Portal Walkthrough - Part 12 - GLaDOS | 401 | Walkthrough | Portal
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| 40. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 18 (Least Steps - 150 Steps) | 400 | Walkthrough | Portal
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| 41. | Portal Walkthrough - Part 10 - Destroyer of Barriers | 377 | Walkthrough | Portal
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| 42. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 18 (Least Time - 1:13) | 374 | Walkthrough | Portal
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| 43. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Portals - 4 Portals) | 354 | Walkthrough | Portal
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| 44. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Time - 1:45) | 349 | Walkthrough | Portal
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| 45. | Portal Challenge Walkthrough Fling out takes Vol 1: Test Chamber 13 | 332 | Walkthrough | Portal
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| 46. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Steps - 55 Steps) | 319 | Walkthrough | Portal
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| 47. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 18 (Least Portals - 25 Portals) | 295 | Walkthrough | Portal
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| 48. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Portals - 9 Portals) | 294 | Walkthrough | Portal
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| 49. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Time - 2:20) | 280 | Walkthrough | Portal
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| 50. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 13 (Least Time - 0:30) | 279 | Walkthrough | Portal
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| 51. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Time - 1:00) | 265 | Walkthrough | Portal
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| 52. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Portals - 21 Portals) | 260 | Walkthrough | Portal
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| 53. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 18 (Least Portals - 30 Portals) | 259 | Walkthrough | Portal
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| 54. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Steps - 55 Steps) | 254 | Walkthrough | Portal
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| 55. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Time - 0:20) | 247 | Walkthrough | Portal
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| 56. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 14 (Least Time - 0:50) | 246 | Walkthrough | Portal
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| 57. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 16 (Least Steps - 70 Steps) | 223 | Walkthrough | Portal
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| 58. | Portal Challenge Walkthrough Fling out takes Vol 9: Test Chamber 18 Part 3 | 222 | Walkthrough | Portal
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| 59. | Portal Walkthrough - Part 2 - The Changing Line | 213 | Walkthrough | Portal
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| 60. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Steps - 175 Steps) | 206 | Walkthrough | Portal
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| 61. | Portal Challenge Walkthrough Fling out takes Vol 7: Test Chamber 18 | 198 | Walkthrough | Portal
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| 62. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 18 (Least Time - 2:10) | 188 | Walkthrough | Portal
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| 63. | Portal Walkthrough - Part 3 - Helpful Momentum | 186 | Let's Play | Portal
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| 64. | Portal Challenge Walkthrough Fling out takes Vol 4: Test Chamber 16 Part 2 | 186 | Walkthrough | Portal
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| 65. | Portal Challenge Walkthrough Fling out takes Vol 2: Test Chamber 14-15 | 185 | Walkthrough | Portal
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| 66. | Portal Walkthrough - Part 4 - You're Live Fired | 164 | Walkthrough | Portal
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| 67. | Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Steps - 215 Steps) | 159 | Walkthrough | Portal
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| 68. | Q.U.B.E. Walkthrough - Part 4 | 159 | Walkthrough | Portal
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| 69. | Portal Walkthrough - Part 5 - The Shielding Cube | 146 | Walkthrough | Portal
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| 70. | Portal Challenge Walkthrough Fling out takes Vol 5: Test Chamber 17 | 137 | Walkthrough | Portal
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| 71. | Portal Walkthrough - Part 6 - Uphill Flinging | 128 | Walkthrough | Portal
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| 72. | Q.U.B.E. Walkthrough - Part 8 | 123 | Walkthrough | Portal
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| 73. | Portal Challenge Walkthrough Fling out takes Vol 6: Test Chamber 17 Part 2 | 120 | Walkthrough | Portal
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| 74. | Portal Walkthrough - Part 7 - Timing and Vomiting | 118 | Walkthrough | Portal
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| 75. | Portal Challenge Walkthrough Fling out takes Vol 8: Test Chamber 18 Part 2 | 104 | Walkthrough | Portal
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| 76. | Portal Challenge Walkthrough Fling out takes Vol 3: Test Chamber 15-16 | 95 | Walkthrough | Portal
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| 77. | Perspective Walkthrough - Part 6 - Broken Wall | 66 | Walkthrough | Portal
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| 78. | Portal Walkthrough Fling out takes Vol 1: Parts 4-7 | 60 | Walkthrough | Portal
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| 79. | Portal Walkthrough Fling out takes Vol 2: Parts 8-10 | 56 | Walkthrough | Portal
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| 80. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 3 - Flights of Doors | 35 | | Portal
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| 81. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 6 - Ball Tricks | 34 | | Portal
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| 82. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 8 - Vertical Problems | 34 | | Portal
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| 83. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 15 - Time is Cruel | 28 | | Portal
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| 84. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 13 - Overture Barrier | 27 | | Portal
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| 85. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 12 - Duality Solution | 26 | | Portal
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| 86. | NetMoverSitan Plays - .T.E.S.T: Expected Behaviour - Part 14 - Overture Encore | 26 | | Portal
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| 87. | NetMoverSitan Plays - Cradle - Part 7: Ancestral Update | 26 | | Portal
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| 88. | NetMoverSitan Plays: ReThink | Evolved 2 - Part 5: Binary Illogic | 25 | | Portal
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