| Album Title | Release date | us | aus | bra | ger | can | ita | esp | fra |
|---|---|---|---|---|---|---|---|---|---|
| 1977 | 74 | 4 | 38 | 74 | 30 | ||||
| An Elixir for Existence | 43 | 36 | |||||||
| Arcane Astral Aeons | 79 | 17 | 91 | ||||||
| At Sixes and Sevens | 57 | 35 | |||||||
| Dim Days of Dolor | 32 | 17 | |||||||
| Nine Destinies and a Downfall | 73 | 71 | |||||||
| Perils of the Deep Blue | 28 | ||||||||
| Perils of the Deep Blue (Bonus Version) | 67 | ||||||||
| Riddles, Ruins & Revelations | 77 | 24 | 27 | 42 | |||||
| The Enigma of Life | 15 | ||||||||
| The Enigma of Life (Exclusive Bonus Version) | 69 |