After hell's invasion of Earth, the UAC set up giant floating cities while the remaining population re-built human society on Earth.
While patroling the Earth's surface, shooting the remaining imps and zombies, you get a radio transmission from one of the floating cities. You run to your pilot and fly there.
But what you didn't know, is that the secrets go far beyond hell this time.
Credits:
Scuba Steve, Mark Klem, Adobe, ModArchive, GZDoom (Builder) creators, and ID Software.
Base:
New from scratch
Build time:
5 Months
Editor(s) used:
GZDoom Builder, SLADE, and Photoshop
Bugs:
One of my friends reported of a HOM in MAP03, but I never noticed it.