Releases
| Name | Publisher | Year | Type | Availability |
|---|---|---|---|---|
| Colossus Chess 4 | CDS Microsystems | 1986 | Original release (O) | Available |
| Colossus Chess 4 | CDS Microsystems | 1986 | Available | |
| Colossus Chess 4 | Zafi Chip | 1986 | Re-release (R) | Available |
| Colossus Chess 4 | Z Cobra | Re-release (R) | Available | |
| Lancelot | Mandarin Software | 1988 | Original release (O) | Available |
| Lancelot | Mandarin Software | 1988 | Available | |
| Lancelot | Mandarin Software | 1988 | Broken/corrupted version | Available |