| The System | ||
| Babylon | ||
| Loud, Loud, Loud | ||
| The Four Horsemen | ||
| The Lamb | ||
| The Seventh Seal | ||
| Aegian Sea | ||
| Seven Bowls | ||
| The Wakening Beast | ||
| Lament | ||
| The Marching Beast | ||
| The Battle Of The Locusts | ||
| Do It | ||
| Tribulation | ||
| The Beast | ||
| Ofis | ||
| Seven Trumpets | ||
| Altamont | ||
| The Wedding Of The Lamb | ||
| The Capture Of The Beast | ||
| ∞ | ||
| Hic Et Nunc | ||
| All The Seats Were Occupied | ||
| Break |
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| 666 (2xLP, Album) | Vertigo | 6641 581 | UK | 1972 | |
| 666 (2xLP, Album) | Vertigo | 6673 001 | Germany | 1972 | |
| 666 (2xLP, Album) | Vertigo | 6673 001 | France | 1972 | |
| 666 (2xLP, Album) | Vertigo | VEL 2-500 | US | 1972 | |
| 666 (2xCD, Album) | Vertigo | 838 430-2 | Europe | 1989 | |
| 666 (2xCD, Album, RE, RM) | UM³/USM Japan | UICY-9373/4 | Japan | 2004 | |
| 666 (2xCD, Album) | Vertigo | 838 430-2 | UK & Europe | ||
| 666 (2xLP, Album, RE) | Mercury | SRM-2-7510 | Canada | ||
| 666 (2xLP, Album, RP) | Vertigo | VEL 2-500 | Canada |
referencing 666, 2xLP, Album, 6673 001