| 1. | Portal 2 - Opposite Day by Ossilia Flawol | 18,169 | | Portal 2
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| 2. | Portal 2 - A Second Chance (Part One) by a kid named finger | 7,241 | | Portal 2
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| 3. | Portal 2 - Gravity Gun by xR3dSn1per31 | 2,345 | | Portal 2
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| 4. | Portal 2 - Orbital resonance by Evanpie711 | 667 | | Portal 2
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| 5. | Portal 2 - A Spot of Orange [redecored] by MrRecoR's | 566 | | Portal 2
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| 6. | Portal 2 - Gravity gun test by hilde | 460 | | Portal 2
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| 7. | Portal 2 - Simple test #001 by sdrewmc09 | 342 | | Portal 2
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| 8. | Portal 2 - REFRACT [MAJOR UPDATE] by shutdown.exe | 236 | | Portal 2
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| 9. | Portal 2 - Brain Test 1 by jojocheem | 216 | | Portal 2
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| 10. | portal 2 - The Old Mansion by gazboy002 | 206 | | Portal 2
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| 11. | Portal 2 - little bit of fun by FunE55 | 191 | | Portal 2
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| 12. | Portal 2 - Test 00 Pneumatic diversity vent intro by KillerKelly | 187 | | Portal 2
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| 13. | Portal 2 - Opposite Sides by Slippy ¯\_(ツ)_/¯ | 166 | | Portal 2
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| 14. | Portal 2 - Level-02-Interlink by 2401331724 | 157 | | Portal 2
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| 15. | Portal 2 - Adhesion Gel by ærowave | 153 | | Portal 2
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| 16. | Portal 2 - The quest for the Money-verse (pt.4) by MarvinG | 152 | | Portal 2
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| 17. | Portal 2 - Mario Chamber by LNightMarE | 134 | | Portal 2
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| 18. | Portal 2 - Totally Normal by Donkey Kong's Konkey Dong's | 122 | | Portal 2
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| 19. | Portal 2 - MY FIRST TEST LEVEL by the son of master Ivan | 121 | | Portal 2
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| 20. | Portal 2 - turrets get f^**ing executed (now with turret genocide!) by Mr. L | 118 | | Portal 2
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| 21. | Portal 2 - Very Smoll Boi by ඞ | 117 | | Portal 2
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| 22. | Portal 2 - Hello :))))) by MaNdarin4ik_ | 110 | | Portal 2
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| 23. | Portal 2 - almost won by Soldat_NATO | 100 | | Portal 2
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| 24. | Portal2 - Non Euclidian Tests 02 by nvzmovie | 100 | | Portal 2
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| 25. | Portal 2 - Another Day at the Office (Part 1) by Manis | 95 | | Portal 2
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| 26. | Portal 2 - Portal's Edge by Lord von Adel | 95 | | Portal 2
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| 27. | Portal 2 - The Factory 2 by RandomStuffz | 94 | | Portal 2
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| 28. | Portal 2 - Subject Name Here by Macandcheese354 | 94 | | Portal 2
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| 29. | Portal 2 - My Third Test by Stultus | 87 | | Portal 2
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| 30. | Portal 2 - Unforeseen Consequences Part 1/4 by aquaUI | 78 | | Portal 2
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| 31. | Portal 2 - Three Rooms by T97 | 77 | | Portal 2
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| 32. | Portal 2 - QUICK and EASY No.51 by portalroombuilder | 74 | | Portal 2
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| 33. | Portal2 - AUTOMATED LASER MAP by portal2designer | 64 | | Portal 2
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| 34. | Portal 2 - Symmetry by Nolsjokes | 63 | | Portal 2
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| 35. | Portal 2 - Random Test. by tnicol14 | 62 | | Portal 2
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| 36. | Portal 2 - Portal 2: Old-New Adventure (First Contact) by Sharkie | 62 | | Portal 2
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| 37. | Portal 2 - C.U.B.E. Course Part 1/5 (Schrodinger's Cube) by Kahnag | 61 | | Portal 2
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| 38. | Portal 2 - test chamber 1 by zxfranekzx | 61 | | Portal 2
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| 39. | Portal 2 -ProtoZoo_AntoineR by Richieboycadillac | 60 | | Portal 2
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| 40. | Portal 2 - LLIiZa - 1 by Alastor190☭ | 59 | | Portal 2
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| 41. | Portal 2 - Funnel Flinger by TheBumblebeeOfDeath Short | 58 | | Portal 2
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| 42. | Portal 2 - hammer timetravel concept by Jeepdigger89 | 58 | | Portal 2
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| 43. | Portal 2 - ZeroFive by Daxaroodles | 53 | | Portal 2
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| 44. | Portal 2 - Underkill (Concept Showcase) by masalt | 53 | | Portal 2
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| 45. | Portal 2 - Simple Puzzle Cause I'm Dumb by commandblock76 | 52 | | Portal 2
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| 46. | Portal 2 - plate of escape ep.10 the path to management by dove34 | 50 | | Portal 2
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| 47. | Portal 2 - Aperture Novum: Chapter 3 by GeminiUdera - speedrun | 48 | | Portal 2
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| 48. | Portal 2 - White gel walkthrough by Jeepdigger89 | 48 | Walkthrough | Portal 2
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| 49. | portal 2 - testchamber by Apu | 46 | | Portal 2
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| 50. | Portal 2 - Hard - Save the Turret by Jeepdigger89 | 46 | | Portal 2
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| 51. | Portal 2 - Hard Full of danger by Jeepdigger89 | 44 | | Portal 2
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| 52. | Portal 2 Drain by terrified of icecream | 42 | | Portal 2
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| 53. | Portal 2 - GO with the FLOW by portal2designer | 39 | | Portal 2
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| 54. | Portal 2 - Beat the last Dungen by Queen_OF_Sprites | 37 | | Portal 2
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| 55. | Portal 2 - Find The Cube by Kurczak 1337 | 36 | | Portal 2
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| 56. | Portal 2 - a nice test by RubieRaRa | 36 | | Portal 2
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| 57. | Portal 2 - The Cubes On My Side by Exploshen | 35 | | Portal 2
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| 58. | Portal 2 - 异界 by 可爱的憨批凯慕 | 33 | | Portal 2
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| 59. | Portal 2 - A portal test 3 by xXarturo_gamerXx | 32 | | Portal 2
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| 60. | Portal 2 - Erik by jochim.laszlo | 31 | | Portal 2
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| 61. | Portal 2 - portal the pedored 04/10 by Mark Shef | 29 | | Portal 2
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| 62. | Portal 2 - Tunneler by binbows | 29 | | Portal 2
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| 63. | Portal 2 - GG by Demon2009_tv | 26 | | Portal 2
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| 64. | Portal 2 - My First Chamber by Tinyone | 24 | | Portal 2
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| 65. | Portal 2 - Iron Boot by ascotan | 23 | | Portal 2
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| 66. | Portal 2 - Solve with lasers by COOL WHEATLEY | 22 | | Portal 2
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| 67. | Portal 2 - Nice gel by Barteener | 21 | | Portal 2
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| 68. | Portal 2 - 11-03 [CUBE] Panel 3 (Easy level) playthrou (puzzle made by MEA) | 21 | | Portal 2
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| 69. | Portal 2 - Hard - Black Room by Alglabar portal2 | 20 | | Portal 2
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| 70. | Portal 2 - Test 2 (Medium) by Inaktiv3_Ak0unt | 20 | | Portal 2
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| 71. | Portal 2 - The Unused Chambers [PART 2] By CLS 63 AMG | 20 | | Portal 2
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| 72. | Portal 2 - 6 Cubes Chamber by TISTEREMAVIGG | 17 | | Portal 2
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| 73. | Portal 2- levitation and buttons by pokerface8 | 17 | | Portal 2
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| 74. | Portal 2 - a dream by LeeryBear | 16 | | Portal 2
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| 75. | Portal 2 - OzChamps Tutorials on Possibles by ozchamp.wgt | 13 | | Portal 2
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| 76. | Portal 2 - TractorBeam'n'BounceGel by Scrowtums | 13 | | Portal 2
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| 77. | Portal 2 - Infernal tower 2.0 by H2OLGA | 11 | | Portal 2
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| 78. | Portal2 - Test Chamber #01 by VoteMePresident | 11 | | Portal 2
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| 79. | Portal 2 - Cubo [#] by Preap | 11 | | Portal 2
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| 80. | Portal 2 - Mini Golf Madness - Hole 7 by jhead | 9 | | Portal 2
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| 81. | Portal 2 - Balance and Timing by jhead | 8 | | Portal 2
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| 82. | Portal 2 - Mini Golf Madness - Hole 1 by jhead | 7 | | Portal 2
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