| Band members | |
| Sabotaje | |
| Richard Ran | Guitars (lead) |
| Txefi | Bass |
| Tito | Guitars (rhythm) |
| Kepa | Vocals (lead) |
| Aitor Vázquez | Drums |
| War | |
| Chefy | Bass |
| Aitor Vázquez | Drums |
| Kuen | Guitars |
| Marilu | Vocals (lead) |
| Leviatán | |
| Ángel Arellano | Guitars |
| Ritxi "El abuelo" | Vocals (lead) |
| Guridi | Bass |
| Edu Martínez | Drums |
| José Luis Arbide | Guitars |
| Crazy Nights | |
| Anton | Bass |
| Edu Martínez | Drums |
| Ángel Arellano | Guitars, Vocals |
| David | Vocals |
| Dalia | |
| Txutxi | Guitars |
| Llose | Drums |
| Sergio | Guitars |
| Alberto | Bass |
| Cape | Vocals |
| Miscellaneous staff | |
| Sabotaje | |
| Miguel Ángel Vadillo | Producer |
| Fernando Cascales | Cover art |
| Jonpe Santurtzi | Liner notes (Basque translation) |
| Sabotaje | |
| Richard Ran | Guitars (lead) |
| Txefi | Bass |
| Tito | Guitars (rhythm) |
| Kepa | Vocals (lead) |
| Aitor Vázquez | Drums |
| War | |
| Chefy | Bass |
| Aitor Vázquez | Drums |
| Kuen | Guitars |
| Marilu | Vocals (lead) |
| Leviatán | |
| Ángel Arellano | Guitars |
| Ritxi "El abuelo" | Vocals (lead) |
| Guridi | Bass |
| Edu Martínez | Drums |
| José Luis Arbide | Guitars |
| Crazy Nights | |
| Anton | Bass |
| Edu Martínez | Drums |
| Ángel Arellano | Guitars, Vocals |
| David | Vocals |
| Dalia | |
| Txutxi | Guitars |
| Llose | Drums |
| Sergio | Guitars |
| Alberto | Bass |
| Cape | Vocals |
| Miguel Ángel Vadillo | Producer |
| Fernando Cascales | Cover art |
| Jonpe Santurtzi | Liner notes (Basque translation) |
A compilation of demos.
- Tracks 1-4 comprise War's Demo 1989
- Tracks 5, 6 comprise Leviatán's Demo 1987
- Tracks 7-9 comprise Crazy Nights' Demo 1990
- Tracks 10, 11 comprise Dalia's Demo 1984
- Tracks 12-15 comprise Vigilante's Demo 1988
- Tracks 16, 17 comprise Sabotaje's Demo 1988
Released in cooperation with Iberia Metálica
Recording information:
Leviatán's tracks recorded at Pan Pot Studios (Getxo) in May 1987.
Identifiers:
Mastering SID Code: CD-3809#1