| 1. |  Skye Storme | 145,976 | OUTER PLANETS UNLOCKED! - Ep 14 - MARS HORIZON SPACEX Gameplay / Let's Play | 37:12 |
| 2. | Aavak After Hours | 28,927 | Aavak Streams Mars Horizon – Part 14 | 37:48 |
| 3. | The Geek Cupboard | 17,089 | Playing with the Big Rockets! | Mars Horizon - Part 3 (Alpha Build - Space Agency Management Sim) | 43:46 |
| 4. | GPGH Ryan89 | 5,678 | Pluto Flyby - Mars Horizon Gameplay - Japan Let's Play | 24:29 |
| 5. | TIJ Gaming | 4,310 | MULTI-CREW ORBIT | Mars Horizon Let's Play #6 (Beta Gameplay) | 30:10 |
| 6. | Sim UK Ultimate Realism | 1,944 | Ep.17 Mars Horizon Gameplay on PC [4K-UHD] - The FINAL STAGE of URANUS FLYBY is ERM...IMPOSSIBLE | 16:19 |
| 7. | Gaming Rules! | 1,692 | Mars Horizon Playthrough - Part 1 | 2:23:29 |
| 8. | Anglaisefolle plays | 401 | Mars Horizon Part 43 HUMANS ON MARS | 38:47 |
| 9. | Auroch Digital | 371 | Let's Play Mars Horizon With The UK Space Agency | Festival Of Tomorrow 2021 | 59:51 |
| 10. | HexTree | 332 | Let's Play: Mars Horizon (full Russia playthrough) - Closed Beta | 5:16:58 |
| 11. | EGX | 225 | Can playing games help you get into space? (Mars Horizon) | 39:27 |
| 12. | JoeR247 | 104 | JoeR247 Plays Mars Horizon! - Part 5 - Mission to Mars! | 29:57 |
| 13. | Doughnut Doney | 59 | Lets Play: Mars Horizon Ep 2 - Lets get some Rockets Into Space! | 20:04 |
| 14. | Old Man Gaming UK | 47 | Let's Play Mars Horizon Beta | 59:45 |
| 15. | DauntlessGG | 8 | Dauntless Plays Mars Horizon - Ep2 | 4:50:11 |
