| Software list: | Sinclair ZX81 cassettes (zx81_cass) |
|---|---|
| Short name: | 3ddefend |
| Year: | 1981 |
| Publisher: | J.K. Greye Software |
| Supported: | Yes |
| Short name | Description | Year | Publisher | Supported |
|---|---|---|---|---|
| 3ddefendn | 3D Defender (New Generation) | 1982 | New Generation Software | Yes |
| Short name: | cass1 |
|---|---|
| Interface: | zx81_cass |