Releases
| Name | Publisher | Year | Type | Availability |
|---|---|---|---|---|
| Countdown | Macsen Software | 1986 | Original release (O) | Available |
| Countdown | Macsen Software | 1986 | Available | |
| Countdown | TV Games | 1986 | Re-release (R) | Available |
| Name | Publisher | Year | Type | Availability |
|---|---|---|---|---|
| Countdown | Macsen Software | 1986 | Original release (O) | Available |
| Countdown | Macsen Software | 1986 | Available | |
| Countdown | TV Games | 1986 | Re-release (R) | Available |