Aliens vs. Keen

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Aliens vs. Keen
Aliens vs. Keen.png
Mod-ingame-Aliens vs. Keen.png
Modded episodeKeen 1
ProtagonistCommander Keen
Release date
Latest update2006-06-07
HomepageAvK Official Site
Discussion(s)PCKF: demo 2, full version
Keen: Modding
Number of levels12
Secret levels1
New gameplay?No
New graphics?Yes
New levels?Yes
New sounds?Yes
New music?Yes
(4 votes)
First demo version title screen.

Aliens vs. Keen is a Keen 1 mod by DivoKeen; released as a demo in 2005. A second demo was released with the message that the game was discontinued. Levellord decided to pick it up and completed it with help of Levellass and some minor contributions of Djaser. The final version included an English and an average translated German version by Djaser.

Technical Information

  • Stand alone mod based on the Alien movies
  • Tileset: completely redone tileset
  • Sprite animation frames: All new monsters, heavily patching
  • Story text: new
  • Levels: 11 regular levels, 1 secret level, 1 worldmap
  • Includes a soundtrack mp3
  • Bugs: Ending may not work, error.bat provided


Commander Keen in "Aliens Versus Keen"

Billy Blaze, eight year-old genius, working diligently in the backyard clubhouse has created an interstellar starship from old soup cans, rubber cement and plastic tubing. While his folks are out on the town and the babysitter has fallen asleep, Billy travels into the backyard workshop, dons his brother's football helmet, and transforms...

Commander Keen -- Defender of Earth!

In his ship, the Bean-with-Bacon Megarocket, Keen dispenses galactic justice with an iron hand!


On his weely search for Mortimer Keen receives a message from a deserted planet nearby. Its says:

"Freezer broke - 1 escaped - crew disappeared - aliens returned in greater number - can't reach gas vent - destroy planet, save specie - [message ends]"

!?! that planet should have been destroyed years ago! 'Somebody' must have saved it to study the aliens, sounds like the work of Mortimer... The call for help was sent 1 week ago, by this time there won't be any survivors. I must contact Vorticon VI they still have some of Mortimer's missiles powerful enough to destroy a planet.

Asteroid Impact!

A red light blinks... The impact warning... Keen steers upwards and presses all the buttons on the joystick down. Seconds later he's only few miles from the alien planet. The Bean-with-Bacon Megarocket busts into fire on its way down. Keen sees a hole on the surface and steers at 1200KM/H towards it. He loses control in the tunnel beneath. Finally the shaking and juddering stops, but the way back to the surface is blocked, Keen crawls out of the spaceship. His pogo, Neural Stunner and ray gun are broken and of no use.

An ominious clinking noise draws Keen to the cargo hold of his ship; there, nestled amongst hordes of acquired candy lies a sight that chills him to his core; a telentric fusion core, captured from Mortimer's forces just last week, damaged and leaking coolant. It is only a matter of time before it detonates, destroying everything for a distance of 400 meters. But that's not all; with growing horror Keen realizes that the soil here contains high levels of Manganese, a telentrically active metal that will amplify the explosion a hundred thousand times. Now there is nowhere to run, when the fusion core detonates the entire planet will explode!

"well, that should deal with the aliens" mutters Keen. In front of him is a massive cave system, but will there also be aliens...? A blood curdling scream answers his question; slowly Keen ambles into the darkness, to meet his fate.


Blueberry - 100 points

Lemon lump - 200 points

Lime lump - 500 points

Gum - 1000 points

Crystal - 5000 points

Ending Bug

On most systems the ending does not work as it should. Despite being a Keen 1 mod you don't need to collect four parts to win the game. Instead there is a patch so you only need to complete 9 levels to win. But several cases have been reported where one completed all the levels and still the ending would not show. The creator was aware of this bug and included an error.bat which is to be run in that case, changing the number of levels needed to win to 1. When you run the mod with error.bat the ending shows after the first level has been completed.

Level Maps

Spoiler Warning! This shows the whole levels.

Release History / Downloads