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Modded episodeKeen 1
ProtagonistCommander Keen
Release date
Latest update2011-02-05
Discussion(s)PCKF K:M
Number of levels16
Secret levels1
New gameplay?Yes
New graphics?Yes
New levels?Yes
New sounds?Yes
New music?No
(4 votes)
Overview map

Mondochrome is a Keen 1 mod by Commander Spleen. This mod is all about gameplay and puzzles solving. With its verdant and hard black colour scheme it is reminiscent of the old Gameboy look.


Keen cannot use his Raygun, which is not needed since this mod comes with nearly no inter-lifeforms. There is only a Yorp and a RoboGreen coming across. Instead of shooting, Keen will smoothly slide along the floor while pressing the Space key.

In this mod Keen has infinite lives. While collecting points the goal is not to loose any lives by jumping into hazards. Any points earned in a level will be removed from the total high scores if Keen dies. Getting a high score in this mod is actually an accomplishment.

The arrow blocks are the main puzzle aspect to the game. One can only walk through these blocks in a certain direction.


Too excited to go through the last few entries on his check list, Billy bounds over to the novelty oversized switch embedded in a wall at the other end of the room.

"This will be the greatest motion simulator EVER!" he proclaims as he latches onto the switch and heaves it down into the ON position.


"WAHT!?" Billy shouts, "I must've used too much Gnosticene slug slime in the hydraulic fluid. Nuts."

He steps outside to find himself no longer in his back yard, instead surrounded by a world of glowing green lines...

Level Maps

Spoiler Warning! This shows the whole levels.