| Title |
Publisher |
Year |
Language |
Documents |
| Countdown |
Infected Software |
? |
English |
Solution, Hints |
| Countdown to Doom |
Acornsoft  |
1983 |
English |
Solution, Hints, Clue sheet |
| Final Countdown, The |
Dragon Data , JARB Inc. |
1983 |
English |
Solution |
| Countdown |
Forward Software |
1984 |
English |
Solution, Hints |
| Final de la Cuenta Atras, El |
Eurohard |
1984 |
Spanish |
|
| Countdown |
Central Solutions |
1986 |
English |
Solution, Map, Hints, Clue sheet |
| Countdown to Doom |
Topologika |
1987 |
English |
Solution, Hints, Clue sheet |
| SDI: Countdown to Doom |
Falsoft Inc |
1988 |
English |
|
