| 2024-12-25 | How I Added The Thermal Discouragement Beam To Portal 1 (Christmas 2024 Special) | 0:00 | 776 | | Portal
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| 2024-01-15 | Gareth Plays: Portal 64 (Playing a Cancelled Demake?) | 22:45 | 195 | Let's Play | Portal
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| 2023-07-12 | Hammer Tutorial 32 - Logic Gates | 10:09 | 273 | Vlog | Portal
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| 2023-05-15 | Hammer Tutorial 31 - Adding Dynamic Light to a Portal Turret | 8:24 | 311 | Tutorial | Portal
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| 2023-04-15 | Looking At My Old Portal Maps From 2012! | 23:28 | 183 | | Portal
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| 2023-02-07 | Hammer Tutorial 29 - Box Dropper From Portal 1 As A func_instance | 29:51 | 400 | Tutorial | Portal
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| 2022-12-13 | Early Portal Advanced Maps in Portal with RTX | 12:55 | 633 | | Portal
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| 2022-12-10 | Getting Started With Portal with RTX Mapping! | 6:11 | 1,604 | | Portal
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| 2022-12-09 | Gareth Plays: Portal with RTX (Portal's Never Looked This Good? + I Try The No Jump Challenge!) | 1:15:48 | 237 | Let's Play | Portal
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| 2022-07-29 | Hammer Tutorial 22 - Setting Up Portal Test Chamber Signs (& Using Blender To Make Custom Signs!) | 34:30 | 619 | Tutorial | Portal
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| 2022-05-31 | Portal 1 - devtest & devtest_01 Showcase | 5:25 | 179 | | Portal
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| 2022-05-28 | Portal 1 - func_liquidportal Showcase | 1:06 | 252 | Show | Portal
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| 2022-05-24 | Thermal Discouragement Beam in Portal 1 (Test Examples) | 4:00 | 267 | | Portal
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| 2020-12-04 | PORTAL.EXE | 11:16 | 4,809 | | Portal
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| 2020-08-15 | Gareth and James Play: ERROR (A Great Psychological Horror Mod For Portal 1!?) | 1:03:05 | 1,332 | Vlog | Portal
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| 2020-07-07 | Hammer Tutorial 17 - portal_blocker And full_blocker Custom Emancipation Field Ideas For Portal 1 | 16:09 | 125 | Tutorial | Portal
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| 2018-08-06 | Gareth Plays: Portal Prospekt Playthrough [Nova Prospekt Themed Portal Mod!] | 39:24 | 389 | Let's Play | Portal
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| 2018-07-13 | Hammer Tutorial 12 - logic_case For Pseudorandom Level Choices | 6:16 | 1,480 | Vlog | Portal
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| 2018-06-21 | Hammer Tutorial 11 - func_movelinear Replacement for Elevators | 11:51 | 1,434 | Tutorial | Portal
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| 2018-01-20 | Hammer Tutorial 10 - Combine Ball Launcher and Catcher | 40:53 | 737 | Tutorial | Portal
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| 2017-06-12 | Hammer Tutorial 9 - phys_blocker (Custom Emancipation Field Idea) | 8:48 | 210 | Tutorial | Portal
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| 2016-12-23 | Hammer Tutorial 8 - Portal's Introductory Clock Timer | 35:07 | 1,021 | Tutorial | Portal
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| 2016-12-03 | Portal RANDOMIZED! [Full] | 33:59 | 1,893 | | Portal
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| 2015-02-11 | Gareth Plays: Portal 'Re-Walkthrough' (Full Uncut) | 1:04:12 | 137 | Let's Play | Portal
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| 2012-03-18 | Portal Walkthrough Chapter 3 - What Cake? | 4:26 | 62 | Walkthrough | Portal
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| 2012-02-14 | Portal Walkthrough Chapter 2 - Unmonitored areas... | 4:47 | 117 | Walkthrough | Portal
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| 2012-02-12 | Portal Walkthrough Chapter 1 - The Basics | 6:04 | 50 | Walkthrough | Portal
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