Commander Keen 1: Marooned on Mars started the iconic game series. In this episode, aliens from the planet Vorticon VI find out about the eight year-old genius and plan his destruction. While Keen is out exploring the mountains of Mars, the Vorticons steal vital parts of his ship and take them to distant Martian cities! Keen must wrest the parts back from their wicked, clawed hands.

In this run, the author takes back what is Keen's without firing shots at any organic lifeform. Reading the author's comments is recommended.