It takes place aboard a spaceship. The story takes place after all the official Keen games, and is an interpretation of a possible storyline for Commander Keen: The Universe is Toast.
- Graphics: custom graphics by Xkylyr Rauh
- Levels: 18 levels
- Tools used (incomplete list): ModKeen 1.0, CKPatch
In this episode, having stopped the Shikadi Armageddon Machine and saved his babysitter Molly from being devoured by the Bloogs of Fribbulus Xax, Commander Keen finally sits down to decypher the mysterious message he found in the command room of the Q.E.D.
Upon translating, Keen was shocked to discover that Mortimer's plans extended far beyond the destruction of Earth--or even the Galaxy! No, Mortimer's plan is to destroy the Universe!
Checking in on his still-groggy parents, (whom he had recently nursed back to conciousness via ice cream,) young Billy once again donned his brother's football helmet and blasted off into space, destination: McMire's ship.
After a considerable trip, Keen's ship slowed out of hyperspace and crept up to the underside of Mortimer's stealthy mothership. A simple frequency scan granted him access through some bay doors, and without a second's hesitation, Keen set out to dismantle key structures in this Universe-threatening ship!
|Little Candies – 100 points|
|Yummy Cookie – 200 points|
|Juicy Hot Dog – 500 points|
|Fruit Snacks – 1000 points|
|Bowl of Nachos – 5000 points|
|Neural Stunner - Ammo for Neural Stunner: increase Keen's weapon ammo|
|Mortimer's Ship Parts - Neuclidium Core, Kirimpul Piston, Ponart Sensoscope, Hyprician Link|
|Keygems - used to open doors|
|Basic Service Droid|
|Sparky Mark II|
|A special Tank Bot|
Spoiler Warning! This shows the whole levels.
There are three levelpacks made for this mod.
Years later, KeenRush released a levelpack called xky1rooms. It's a remake of 14 of the levels from the original mod as one-room levels.