Chris Harbin is one of Doom's more obscure authors. While he donated one of his unfinished levels to Death Tormention II, his magnum opus is this, Operation: BIOWAR. Released in 1999, BIOWAR is one of those Doom II megaWADs that didn't bother to stretch to fit the mythical thirty-two map slots. Instead, it's eighteen normal maps plus one secret level, and I believe the whole thing plays back in vanilla Doom. Of course, Harbin didn't necessarily go it alone, and Biowar also features the stylings of Paul Corfiatis, who revised one of his levels from Twilight Zone II, and John Bishop, who released a smattering of solo releases over the late 90s, and was apparently a contributor to Plutonia 2 in its initial stages of development, though those levels are now confined to the archived development WADs.
