| 1. | Alpha Beta Gamer | Lightmatter - Shadows Kill You in this Stylish, Inventive & Darkly Humorous Sci-Fi Puzzle Adventure | 1,047 | |
| 2. |  Limmy | Joke in bad taste? THIS is how to apologise | 411 | |
| 3. |  HCL.hr | NOVA IGRA KAO PORTAL - Lightmatter | 286 | |
| 4. |  兄者弟者 | #1【謎解き】弟者の「Lightmatter」【2BRO.】 | 202 | |
| 5. | Funhaus | The Shadows Will Kill You! - Lightmatter Gameplay | 195 | |
| 6. | Limmy | My brain's not slow | 154 | |
| 7. |  Aspyr | Lightmatter – Announcement Trailer | 120 | Preview |
| 8. | IGN | Lightmatter – Official Launch Trailer (Portal-like Horror Puzzle Game) | 117 | Preview |
| 9. |  بيستي بتاع زمان - Pisty Plays | اوعى تغرق في الضملة! 😫 | مجانية | لايت ماتر - Light Matter | 110 | |
| 10. | 兄者弟者 | #5【謎解き】弟者の「Lightmatter」【2BRO.】 | 97 | |
| 11. | 兄者弟者 | #10【謎解き】弟者の「Lightmatter」【2BRO.】END | 89 | |
| 12. | 兄者弟者 | #2【謎解き】弟者の「Lightmatter」【2BRO.】 | 88 | |
| 13. |  Staszek iGRAszkowski | Lightmatter PL #6 - FINAŁ! | Virgil - bohater czy szaleniec? | 87 | |
| 14. | 兄者弟者 | #4【謎解き】弟者の「Lightmatter」【2BRO.】 | 84 | |
| 15. |  NEXT with John Koetsier | Photonic computing questions answered: Lightmatter CEO | 75 | |
| 16. | Staszek iGRAszkowski | Lightmatter PL #1 | Portal + Talos + zabójczy cień :o | 73 | |
| 17. | 兄者弟者 | #6【謎解き】弟者の「Lightmatter」【2BRO.】 | 69 | |
| 18. | 兄者弟者 | #8【謎解き】弟者の「Lightmatter」【2BRO.】 | 61 | |
| 19. | Staszek iGRAszkowski | Lightmatter PL #3 | Windy w tej placówce to jakiś żart! | 59 | |
| 20. | 兄者弟者 | #3【謎解き】弟者の「Lightmatter」【2BRO.】 | 55 | |
| 21. | 兄者弟者 | #9【謎解き】弟者の「Lightmatter」【2BRO.】 | 55 | |
| 22. | 兄者弟者 | #7【謎解き】弟者の「Lightmatter」【2BRO.】 | 52 | |
| 23. | Rubhen925 | LIGHTMATTER Gameplay Walkthrough Part 1 - No Commentary [PC 1080p] | 48 | Walkthrough |
| 24. | The Escapist | Lightmatter | Review in 3 Minutes | 46 | Review |
| 25. | Staszek iGRAszkowski | Lightmatter PL #4 | Konektory fotonowe, czyli nowe zabawki :o | 46 | |
| 26. | Arcadam | I DON'T THINK I CAN LEAVE!?!? | LIGHTMATTER | 44 | |
| 27. |  Sharlly | Čo (NE)hrám pre Vás #14 Lightmatter | 39 | |
| 28. | Arcadam | NEW PUZZLE GAME 2020 | LIGHTMATTER | 37 | |
| 29. |  INDIAN - Czech TV Gaming Show | Lightmatter vzdává hold legendárnímu Portalu | 34 | |
| 30. | Staszek iGRAszkowski | Lightmatter PL #5 | Please, don't touch anything. Ups? | 34 | |
| 31. | ScottyDGaming | Lightmatter, Part 4 / Virgil, Arthur or Ellen, Who is Good? Both Endings (Alternative Secret Ending) | 31 | Let's Play |
| 32. | Arcadam | (Chuckles) I'M IN DANGER | LIGHTMATTER | 30 | |
| 33. |  Rocket Beans Let’s Play | Rätseln, das ist das neue Gruseln | Lightmatter mit Simon | 29 | Review |
| 34. | Staszek iGRAszkowski | Lightmatter PL #2 | Świaaatłooo, nosisz je w... lampie ♪♫ | 28 | |
| 35. | StephenPlays | FIRST20 | Lightmatter | 26 | |
| 36. |  Улей Пчелкина | Прохождение Lightmatter #01 - Головоломка со светом | 26 | |
| 37. | IGRARIUM | ОБЗОР игры LIGHTMATTER - крайне ИНТЕРЕСНЫЙ клон PORTAL | 25 | |
| 38. |  BlackDrum | ПОРТАЛ ГДЕ ТО РЯДОМ - LIGHTMATTER #7 | 23 | |
| 39. | Keith Ballard | Let's Play Lightmatter Part 6 FINALE - Suddenly a Platformer | 23 | Let's Play |
| 40. | Улей Пчелкина | Прохождение Lightmatter #05 - Финал | 23 | |
| 41. | INDIE | Lightmatter | Смертоносные тени | 23 | |
| 42. | Keith Ballard | Let's Play Lightmatter Part 1 - A Light or Death Situation | 22 | Let's Play |
| 43. | elevatorz | Mind the Gap. (Sci-fi Or Bust Puzzle Teaser 2) | 22 | |
| 44. |  Colonkin Game | Lightmatter ► ПЕРВЫЙ ВЗГЛЯД. ТЕМНОТА УБИВАЕТ! | 22 | |
| 45. | Fry | STAČÍ JEDEN ŠPATNÝ KROK! | Lightmatter | RECENZE (CZ/SK) | 21 | |
| 46. | CloudConnection | A Puzzle Platformer That Shines | Lightmatter Review | 20 | |
| 47. | Ferrum Play | Lightmatter #8 \ Свет в конце тоннеля! | 20 | |
| 48. |  Nokzen Gaming | Lightmatter - Gameplay (First-person Puzzler where shadows kill you) | 20 | Let's Play |
| 49. | itsDair's Gaming Stuff | SHOULD LIGHTMATTER TAKE YOUR MONEY?! 💰🤔 - Lightmatter Review | 19 | Review |
| 50. |  The Scarlet Seeker | Lightmatter | Review | 19 | Review |
| 51. | Gryphon Gaming | LIGHTMATTER #3 | THE CORE | 17 | |
| 52. | Gryphon Gaming | LIGHTMATTER #5 | I WILL TOUCH EVERYTHING (END) | 16 | |
| 53. | 黛 灰 / Kai Mayuzumi【にじさんじ】 | 【Lightmatter】影に飲まれないよう脱出するパズルゲーム【黛 灰 / にじさんじ】 | 16 | |
| 54. | CO-SU | Lightmatter Gameplay walkthrough [Part 1] - The shadow kills PC/PS4/XBOX ONE Lets play | 16 | Walkthrough |
| 55. | Gryphon Gaming | LIGHTMATTER #4 | TOO MANY PORTAL REFERENCES! | 15 | |
| 56. | Keith Ballard | Let's Play Lightmatter Part 3 - Round and Round | 14 | Let's Play |
| 57. | Keith Ballard | Let's Play Lightmatter Part 4 - Photon Connector | 13 | Let's Play |
| 58. | Keith Ballard | Let's Play Lightmatter Part 2 - The Insider | 13 | Let's Play |
| 59. | Carrot Helper - 100% Walkthroughs | No Commentary | Lightmatter 100% Game Walkthrough + All Achievements | 13 | Walkthrough |
| 60. | Aspyr | Lightmatter – Launch Trailer | 11 | |
| 61. |  LeStream Replay | Découverte du Portal-Like, Lightmatter / Conseils config' pour le stream | Lunch Play EX #74 | 11 | |
| 62. | Gamology | SHADOWS will KILL you in this game! (feat. TheRealGMat) | Lightmatter | 11 | |
| 63. | Evil Raccoon | Lightmatter - ЭТИ ТЕНИ ОПАСНЕЕ ЧЕМ КАЖУТСЯ! | ПЕРВЫЙ ВЗГЛЯД, ГЕЙМПЛЕЙ И ОБЗОР ИГРЫ | 11 | |
| 64. | TheRealGMat | If Aperture Science Was Run by a Moth | Lightmatter | 10 | Review |
| 65. | Gryphon Gaming | LIGHTMATTER #1 | MEET BITCHHEAD | 10 | |
| 66. | Afterwork Gaming | Lightmatter - Late Nite Let's Play - Episode 9 | 10 | Let's Play |
| 67. | Ferrum Play | Lightmatter #3 \ Котик!? | 10 | |
| 68. |  Stealth17 Gaming | Lightmatter - The Shadows Are Lava | 9 | |
| 69. | Keith Ballard | Let's Play Lightmatter Part 5 - Insatiable Desire | 9 | Let's Play |
| 70. | S3zhov | Тьма убивает. Lightmatter [Одним глазком] | 9 | |
| 71. | The Backlog | LightMatter Finale - Both Endings. The Good Ending, and the EVIL Ending! | 9 | Let's Play |
| 72. | ASDF Gaming | Aperture Science Universe CONFIRMED | 9 | |
| 73. | Улей Пчелкина | Прохождение Lightmatter #02 - Расследование Эллен | 8 | |
| 74. |  Jogador Critico | Review | Lightmatter ⭐️⭐️⭐️⭐️⭐️ | 8 | |
| 75. | Aspyr | Lightmatter – Accolades Trailer | 8 | |
| 76. | みどりくん | 光と影のパズル【Lightmatter】#1 | 8 | |
| 77. | ScottyDGaming | Lightmatter, Part 1 / The Floor Is Lava but with Dark Shadow Puzzles (Full Game, First Hour Intro) | 8 | Let's Play |
| 78. | Hantaa Archiwum | ZANIM ŚWIAT POCHŁONIE CIEMNOŚĆ || Lightmatter [#5] | 8 | |
| 79. | Rokky GAME | Lightmatter первый взгляд | Lightmatter предварительный обзор | Lightmatter геймплей | 8 | |
| 80. | ASDF Gaming | Team JAMES | 8 | |
| 81. | NOFEX | САМЫЙ ЛАМПОВЫЙ СТРИМ В Lightmatter | 8 | |
| 82. | Zahait | Both Endings + 100% Achievements - Lightmatter - Episode 5 | 8 | Show |
| 83. |  ShowGamer | Секретная концовка Lightmatter | 7 | |
| 84. | Canal Deivi | Lightmatter i7 3770 + RX 580 8GB Red Dragon Powercolor Teste/Gameplay Full HD 1080p | 7 | |
| 85. | HardLifeGame TV | СВЕТ И ТЬМА ► Lightmatter | 7 | Walkthrough |
| 86. | Dmitry Sazonov | ФИНАЛ ► Lightmatter #4 | 7 | |
| 87. |  no_leaf_clover | Lightmatter - Puzzle Game - 1 | 7 | |
| 88. | ASDF Gaming | Floor is Lava, Now with LASERS | 7 | |
| 89. | Gryphon Gaming | LIGHTMATTER #2 | I'M A JOURNALIST? | 7 | |
| 90. | Hantaa Archiwum | TAJNE LABORATORIUM I ZABAWY ŚWIATŁEM - NASTĘPCA PORTALA || Lightmatter [#1] | 7 | |
| 91. | Olhar e Usar | Lightmatter - Parte 8 - Português BR | 7 | |
| 92. | FastGoerTV | БОЙСЯ ТЕМНОТЫ | Lightmatter ► ПЕРВЫЙ ВЗГЛЯД | 6 | |
| 93. | Zahait | Big Red Button - Lightmatter - Episode 4 | 6 | Show |
| 94. | ShowGamer | Полное прохождение Lightmatter (1-20 уровни) | 6 | |
| 95. | Zahait | I'm a Wizard - Lightmatter - Episode 3 | 6 | Show |
| 96. | The Hostile Atmosphere | Spinning the Thing - Lightmatter Gameplay | 6 | |
| 97. | JINO | 【LightMatter ライトマター 実況#8】 ライトマターは世界を救えるのか？ 【日本語】 | 6 | |
| 98. | Fade Panther | Lightmatter Pt 1 {All in the Portal world?} | 6 | |
| 99. | TAYU19ちゅーぶ | #１【謎解き】影に飲み込まれる世界！ 「Lightmatter」 | 6 | |
| 100. | Alex Straga | Lightmatter #2. Хитрый журналюга | 6 | |
