For Heretic (requires zdoom or gzdoom)
Play as Mick Chaos, brother to the slightly demented Dr. Chaos, and shoot your way through three action/puzzle maps as you solve whatever weird inter-dimensional kerfuffle the good doctor has caused this time. Features a new weapon and a new monster. Read the included pdf for the detailed story, helpful clues, and useless trivia.
Bungalow of Dr. Chaos – Mick returns from the Great War to find a letter waiting for him from his brother Dr. Chaos, begging for his help in closing a series of unstable dimensional portals.
Dr. Chaos Strikes Back – Mick is perturbed to learn that the Turkish bath he helped Dr. Chaos build is being used by the doctor to deliver water to a dying desert planet, with predictable space-time continuum disrupting results. Now the bath house/dimensional engine has gone haywire and must be shut down before worlds collide.
City of Chaos – Mick accidentally breaks a delicate dimensional device in the city of Dander, Norway and splits the city into three different timelines. He must explore them to find the missing pieces of the machine and restore the space-time continuum.