| 1. |  Loonsloon | 69,156 | Hardmode Expansion (264) | Modded X-COM: UFO Defense | 0:00 |
| 2. | ARavingLoon | 39,761 | The X-Com Files - 2-49 | 4:53:48 |
| 3. | Oathmaster | 12,204 | Open XCom, Warhammer 40k Mod, Episode 17 | 2:10:48 |
| 4. | Pixelmusement | 8,133 | ADG Episode 98 - X-COM / UFO Enemy Unknown | 15:13 |
| 5. | MrFullCrumb | 5,961 | OpenXCOM | Terror from the Deep - Episode 19 | 32:07 |
| 6. | Applodeon | 1,343 | Let's Play 'Ironman' X-Com (OpenXCom) - 97 [END] | 50:05 |
| 7. | TimeTravelAstronaut | 1,318 | Let's Play X-Com: Part 20 | 25:18 |
| 8. | King Damon The Pagan | 1,188 | THE FINAL MISSION! | Aliens Versus Humans | Mission 25: Destroy The Teleporter | 28:13 |
| 9. | mt32vault | 642 | UFO Enemy Unknown / X-Com CM-32L OST - Victory (Extra Reverb) | 0:46 |
| 10. | Gaming Jay | 457 | X-Com: UFO Defense / UFO: Enemy Unknown (DOS) - Let's Play 1001 Games - Episode 504 | 1:45:17 |
| 11. | ThisVideoAnnoyedMe | 331 | X-Com - 1 Soldier, 1 Blaster Launcher, 10 Attempts, Superhuman Difficulty | 23:56 |
| 12. | Much Games Guides | 232 | 2019 Much Games Hall of Fame | 1:27:14 |
| 13. | Mah-Dry-Bread - Gameplay & Streams! | 189 | Let's Stream Skyrim and XCOM: UFO Defense with Mah-Dry-Bread | 1:45:59 |
| 14. | Jon Renish | 107 | Steam Cleaning - X-COM: UFO Defense | 45:30 |
| 15. | Anza TNT | 104 | X-COM: UFO ReDefense FINALE - WE SHALL DIE, BUT THEY WILL NEVER SEE THE SUN AGAIN! | 46:00 |
| 16. | Objective|Complete | 102 | X-COM UFO Defence - #4 terror mission | 1:14:30 |
| 17. | PresidentialAI | 91 | X-COM: UFO Defense | IT'S TERROR TIME AGAIN [#4] | 1:05:22 |
| 18. | Fidlum Benz | 87 | X-COM: UFO Enemy Unknown Classic (PART 5 FINAL) | 1:04:52 |
| 19. | VesperArcade Rewind | 85 | X-COM: UFO Defense! No Instruction Manual Can Save You From This - Retro Adventure Ep. 176 | 3:22:20 |
| 20. | Retro Gaming Junction | 85 | Let's Play X-Com: UFO Defense / UFO: Enemy Unknown - openxcom | 2:28:01 |
| 21. | RoflLobster | 49 | Day 512: The Asian Offensive | 1:34:34 |
| 22. | Mot2332 | 44 | (X-COM UFO Defense - OpenXcom) Finale - The Battle of Cydonia | 44:21 |
| 23. | No-Fame // D&D and TTRPGs | 41 | The X-Com Files \\ X-COM & Coffee Session 01 #openxcom #retrogaming #xcom | 2:25:02 |
| 24. | 最高キング マブ | 34 | Equal Terms - Minisode Negative 3 - Why X-Com UFO Defense | 31:06 |
| 25. | Niveau Suivant | 25 | X-COM: UFO Defense Partie 7 - Le stream à MaD - 6 juin 2019 | 2:10:45 |
| 26. | jeroti187 | 25 | X Com Apoc Part 12 Stealth Worm | 0:00 |
| 27. | UNORGANIZED TERRITORY | 6 | UFO: Enemy Unknown (X-COM: UFO Defense) | Game Introduction | 1:32 |
