Commander Keen 5: The Armageddon Machine (1991) is a part of the popular Commander Keen saga, developed by id Software. It is a direct continuation of the previous episode of Goodbye Galaxy, in which Commander Keen (Billy Blaze) has learned from the Oracle of Gnosticus IV that the evil Shikadi plan to blow up the galaxy with their doomsday device, the Omegamatic (
It slices! It dices! It causes a 100,000 light year-diameter quantum explosion!). Naturally, he sets out to sabotage the machine and stop the Shikadi.
Using a series of glitches, Keen completes only four stages to get to the end game, only one of which takes any significant length of time, and destroys the Quantum Explosion Dynamo, the core of the Omegamatic in the impossibly short time of 2:02. In the process, he manages to inadvertently prevent the Shikadi from accomplishing their escape (though you have to watch the ending very closely to figure out that this has happened here).