Keen T is a Keen 3 mod released by shikadi. It involves Keen fighting a Shikadi alliance. At first Keen journeys to an asteroid, and by using teleporters, he also visits and explores two moons and the planet where the final battle takes place. The mod features multiple sets of levels where the first level sets the basic design each time, while each of the following levels adds new gameplay elements and challenges, such as longer passages and new hazards. Only the last level is unique. Due to the lack of oxygen, there is always a time limit. The mod is also notable for including both a Normal and Hard mode through the use of two different patch files.