Commander Keen, having learned of Mortimer's survival, prepares to rebuff his next attack. However, after being captured by aliens claiming him to be a wanted man, he must rise to defeat the Grand Intellect's plans for destruction of the universe.

A fresh start/new beginning. See inside for details. What is it, to be a stranger to oneself? Billy Blaze, known throughout the galaxy as the heroic Commander Keen, finds himself internally alienated from his family and friends... And he's not alone.

Mortimer tries to take over the world with a bunch of birds. Originally written for a contest put on by the Keen Fan group on DeviantArt.

Keen seeks Mortimer McMire in the Warpcore to put an end to his plans to destroy the universe. This is a retelling of the final level of the fan-made TUIT series.

Mortimer McMire has escaped the asylum! He sets out to steal something of great value to the peaceful and noble Fribbulans, and enslave them for eternity. In order for Billy to save them, he must learn the most important lesson of all.

Billy decides to make a megarocket.