| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Countdown | Central Solutions |
1986 | English | Solution, Map, Hints, Clue sheet |
| Countdown | Forward Software | 1984 | English | Solution, Hints |
| Countdown | Infected Software | ? | English | Solution, Hints |
| Countdown to Doom | Topologika |
1987 | English | Solution, Hints, Clue sheet |
| Countdown to Doom | Acornsoft |
1983 | English | Solution, Hints, Clue sheet |