| Type | Title | Year | Publisher |
|---|---|---|---|
| Sinclair ZX Spectrum cass. | 🟩 Hacking Software | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 Hacking Utilities | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 Jon North Hacking Utils | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 Pokerama Main Code | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 Pokerama Tape 1 | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 Pokerama Tape 2 | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 XLR-8 Demo - Basic Loader | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 XLR-8 Mastering Tape | 1990 | North, Jon |
| Sinclair ZX Spectrum cass. | 🟩 XLR-8 Mastering Utilities | 1990 | North, Jon |