The year is 2173, the world has suffered through numerous world wars
Freedoom (The license allows for resourece re-using), Blood, Redneck Rampage, Nmn, Gopher for title music (gh-kott.xm only needed a credit) and all others I included in the outro map or may have accidentally forgot about them. (Sorry if you were forgotten to be mentioned)
New from scratch
4 and half years, development started in August 2008, went through numerous concepts.
XWE, Slade3, Doom builder 2
There may be some minor bugs left, unfortunately I won't be able to fix them fast if at all.