| # | SP/EP Title | Release Date | Label | UK | USA |
| 1. | I Am Ready | 13.07.1998 | Mindworx | | |
| 2. | Energize | 30.11.1998 | Mindworx | | |
| 3. | Running / The Message | 06.09.1999 | Mindworx | | |
| 4. | Violet Skies
& Mat Silver | 15.01.2001 | Mindworx | | |
| 5. | Hardcore For Life 3 EP
(Hardcore Till We Die / The Ones To Make You Suffer)
& DJ Paul & MC Rage | 17.12.2001 | So Real | | |
| 6. | Running Again | 20.01.2003 | Above The Sky | | |
| 7. | Catalysed Reactions EP
(Wild / Involutary Intoxication / Contact / Stay Focussed! (The Viper remix)) | 21.07.2003 | Enzyme | | |
| 8. | In The Dark / Failure / Anger / Pussy Motherfuckerz | 29.09.2003 | Enzyme | | |
| 9. | Catalysed Reactions (Part 2) (In The Dark / Failure (DJ Nosferatu remix) /Anger /Pussy Motherfucker) | 13.10.2003 | Enzyme | | |
| 10. | Catalysed Reactions (Part 3) (Payback / Art Of Time / You Are Not In Control / Headroom) | 24.11.2003 | Enzyme | | |
| 11. | The Best Of Gabbers At Work Vol 5
(Wild / Mass Confussion / We're Gonna Get You / The 5th Dimension)
& DJ D & Neophyte & DJ Panic & Evil Activities & Hell System | 22.12.2003 | Gabbers At Work | | |
| 12. | Kapotnaaien
& DJ Nosferatu | 29.03.2004 | Enzyme | | |
| 13. | Payback / Art Of Time / You Are Not In Control / Headroom | 12.04.2004 | Pont Aeri | | |
| 14. | Project Hardcore (The Anthem)
& The Viper & MC Alee & Nosferatu | 14.11.2005 | Bionic | | |
| 15. | Cardiac Platinum Collection #02
(Mind & Body As One / Pump The Vibe / Fingerprintz / Viper)
& Predator & Wedlock & DJ Nosferatu & Overmind | 26.12.2005 | Cardiac Platinum | | |
| 16. | Cardiac Platinum #6 EP
(The Enemy / Here We Go Again / No Choice / We Are The Future)
& DJ Ruffneck & Vanugenth The 5th & Myrmidon | 31.07.2006 | Cardiac Platinum | | |
| 17. | Chains Of Commitment EP
(Causing Confusion / Paranoid / Petrification / Hybrids) | 11.09.2006 | Enzyme | | |
| 18. | Enzyme Twentyfive - Anniverary Edition Celebrating 5 Years Of Enzyme Records
(Victorious / Victorious (Mangled By Ruggneck & Ophidan) / All The Way Down / All The Way Down (Mangled By Nosferatu & Endymion)
& Ruffneck & Ophidian & Nosferatu | 29.01.2007 | Enzyme | | |
| 19. | To Claim The Future / Bio / Vengeance / Art
& Evil Activities | 16.06.2008 | Enzyme | | |
| 20. | Hardcore Blasters Gold EP Vol 5
(Mortal War / Step On Stage / Loose Control / Skullcrack)
& Hellsystem & The Viper & DJ D | 30.06.2008 | Hardcore Blasters | | |
| 21. | Payback VIP | 07.07.2008 | Enzyme | | |
| 22. | Let's Get It On / Party Starter
& DJ Mad Dog & Art Of Fighters | 04.08.2008 | Traxtorm | | |
| 23. | Sanity / My Music World
& The Viper | 12.03.2010 | Viper Beatz | | |
| 24. | A New Day / The Industry
& Art Of Fighters & Meccano Twins | 30.07.2010 | Enzyme | | |
| 25. | Broken / Changed The Game
& Evil Activities | 08.04.2011 | Neophyte | | |
| 26. | Face II Face / Judgment Day / Another Way Up
& Nosferatu | 20.06.2011 | Enzyme | | |
| 27. | Freaks / Plastic Surgery
& Art Of Fighters | 06.10.2011 | Traxtorm | | |
| 28. | Who We Are / Change / Fearless / Highest Ace
& Tha Playah & Evil Activities & The Viper & Nosferatu | 23.11.2011 | Neophyte | | |
