
Following the Invasion of the Vorticons, the story arc of Goodbye Galaxy! takes Commander Keen to a planet to rescue the Keepers of the Secret of the Oracle, which know the location of the Shikadi's doomsday device, The Armageddon Machine.
| Edition | Platform | Release Date | Region |
|---|---|---|---|
| Standard Edition | DOS | Dec 15, 1991 | Worldwide |

Following the Invasion of the Vorticons, the story arc of Goodbye Galaxy! takes Commander Keen to a planet to rescue the Keepers of the Secret of the Oracle, which know the location of the Shikadi's doomsday device, The Armageddon Machine.
| Edition | Platform | Release Date | Region |
|---|---|---|---|
| Standard Edition | DOS | Dec 15, 1991 | Worldwide |