| Type | Title | Year | Publisher |
|---|---|---|---|
| Commodore C64 type-in | 🟩 Secret Message Maker | 1984 | Usborne Publishing |
| Acorn BBC Micro B type-in | 🟩 Secret Message Maker | 1984 | Usborne Publishing |
| Sinclair ZX Spectrum type-in | 🟩 Secret Message Maker | 1984 | Usborne Publishing |
| TRS-80 type-in | 🟩 Secret Message Maker | 1984 | Usborne Publishing |
| Apple II type-in | 🟩 Secret Message Maker | 1984 | Usborne Publishing |