Base Ganymede is an episodic doom 1 project set on one of Jupiter's moons named Ganymede which is sticking to vanilla DooM map limits. Planning on 3 episodes, the first was completed late 2009 and can be found in the downloads section. The final ep was completed in Jan of 2012 & released with all 3 episodes back to back after 2 and half years of work.
A 3 episode vanilla megawad for Doom 1 containing a total of 27 maps. Set on one of Jupiter's moons called Ganymede, this wad should provide a challenge for a wide variety of skill levels ranging from the humble newbie to veteran speedrunner. Each episode has it's own progression rather than the usual base -> hellbase -> hell