| Filename | Type | Size |
|---|---|---|
| Circadia (Japan) (Demo 1) | Redump | 157.33 M |
| Circadia (Japan) (Demo 2) | Redump | 216.12 M |
| Circadia (Japan) (Disc 1) | Redump | 380.37 M |
| Circadia (Japan) (Disc 2) | Redump | 369.49 M |
| Official Fan Book - Circadia - Special CD-ROM (Japan) | Redump | 258.15 M |
| Circadia (Japan) (Demo 1) | CHD Format | 145.74 M |
| Circadia (Japan) (Demo 2) | CHD Format | 197.52 M |
| Circadia (Japan) (Disc 1) | CHD Format | 352.58 M |
| Circadia (Japan) (Disc 2) | CHD Format | 312.74 M |
| Official Fan Book - Circadia - Special CD-ROM (Japan) | CHD Format | 206.15 M |
