2011-10-16 | Portal - GLaDOs Boss fight + Credits song | 10:34 | 1,181,030 | | Portal
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2011-10-12 | Portal - Testchamber 19 Walkthrough - Part 2 | 13:05 | 5,523 | Walkthrough | Portal
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2011-10-11 | Portal - Testchamber 19 Walkthrough - Part 1 | 8:16 | 395 | Walkthrough | Portal
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2011-10-06 | Portal - Testchamber 18 Walkthrough | 6:15 | 132 | Walkthrough | Portal
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2011-10-05 | Portal - Testchamber 17 Walkthrough | 4:47 | 91 | Walkthrough | Portal
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2011-10-05 | Portal - Testchamber 16 Walkthrough | 4:20 | 104 | Walkthrough | Portal
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2011-10-04 | Portal - Testchamber 8 Walkthrough | 1:09 | 98 | | Portal
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2011-10-04 | Portal - Testchamber 9 Walkthrough | 0:41 | 96 | | Portal
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2011-10-03 | Portal - Testchamber 14 Walkthrough | 1:47 | 50 | | Portal
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2011-10-03 | Portal - Testchamber 13 Walkthrough | 1:59 | 41 | | Portal
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2011-10-03 | Portal - Testchamber 12 Walkthrough | 1:10 | 33 | | Portal
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2011-10-03 | Portal - Testchamber 11 Walkthrough | 2:26 | 55 | | Portal
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2011-10-02 | Portal - Testchamber 10 walkthrough | 1:09 | 586 | | Portal
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2011-10-02 | Portal - Testchamber 7 Walkthrough | 1:00 | 139 | | Portal
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2011-10-02 | Portal - Testchamber 5 Walkthrough | 0:56 | 132 | | Portal
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2011-10-02 | Portal - Testchamber 4 Walkthrough | 0:36 | 122 | | Portal
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2011-10-02 | Portal - Testchamber 3 Walkthrough | 0:34 | 114 | | Portal
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2011-10-01 | Portal - Testchamber 1 Walkthrough (Part 2) | 0:47 | 131 | | Portal
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