| 1. |  Lord N-Zo | 5:32:57 | Knockout Kings (Sony Playstation) | Middleweight Career Mode | Full Game Playthrough | 5:32:57 |
| 2. | CJHawk85 | 39:44 | Knockout Kings PS1 Lets Play Episode 4 | 39:44 |
| 3. |  Retro Cheating :D | 27:06 | Knockout Kings 99 Ali vs Butterbean 1 Level Playthrough using the Action Replay V2 Ps2 Bonus Disc :D | 27:06 |
| 4. |  MMTO Official | 19:46 | Knockout Kings 99 Exhibition Heavyweight Fight - Butterbean vs Bob Foster (PS1 / PSX) | 17:41 |
| 5. | AnthonyPlaysTheGaimz | 16:54 | *ALI vs MARCIANO* KNOCKOUT KINGS (PLAYSTATION 1) | 16:54 |
| 6. | 8-bit Retrofit | 14:58 | Game Fights & Real Fights - Let's Play: Knockout Kings | 14:58 |
| 7. |  ChrisJin | 14:19 | Box-Champions - Mini LP | 14:19 |
| 8. | Einfach Videospiele | 12:19 | Box Champions / Knockout Kings 99 🕹️ (PS1) Gameplay - Angezockt (1998) | 12:19 |
| 9. | 10min Gameplay | 10:01 | Knockout Kings ... (PS1) Gameplay | 10:01 |
| 10. | Aubue | 7:15 | Knockout Kings All Characters [PS1] | 7:15 |
| 11. | Gamepology | 6:41 | Playstation (PSX/PS1) Gameplay - Knockout Kings | 6:41 |
| 12. |  The VideoGames Museum | 6:08 | PlayStation - Knockout Kings 2001 (2000) | 6:08 |
| 13. |  Oheao | 5:19 | PlayStation Classic Gameplay - Knockout Kings | 5:19 |
| 14. | PSoneChannel | 2:01 | Knockout Kings 99 sur Playstation | 2:01 |
| 15. | Cogumelo Venenoso | 1:40 | Knockout Kings (Playstation): Intro | 1:40 |
| 16. | Oli (Jeux vidéo et des bas) | 1:24 | Knockout Kings - preview PlayStation (Consoles News E3 1998) | 1:24 |
| 17. | RetroGameTV | 1:24 | Knockout Kings (Intro) - PS 1 | 1:24 |
| 18. | Goldies Times Channel | 0:58 | Knockout kings 99 This was the best boxing game of its time on PlayStation 1 | 0:58 |
| 19. | Retro Soccer Gamer | 0:34 | Knockout Kings INTRO Playstation | 0:34 |
| 20. | Retro | 0:19 | NEVER push Butterbean EVER #boxingfights #knockoutkings #playstation1 #psone #funnygameplay | 0:19 |
| 21. | Uzurama Games | 0:16 | Knockout Kings 99 on Playstation 1 👑🥊🎮 | 0:16 |
