Final Doom

FINAL DOOM
TNT: EVILUTION	THE PLUTONIA EXPERIMENT

Final Doom was id's last commercial expansion in the Doom II style until No Rest For the Living...which still isn't available separately from the Doom II packages in any legal sense. As far as contemporary video game reviews went, Final Doom was panned. It wasn't Doom III, in that Doom III would have ostensibly added more monsters, textures, and possibly weapons to the already aging Doom engine. It also got criticized for the same reasons Doom II was slagged, in that it was still using the Doom engine and the same gameplay fundamentals, albeit in radically different fashions from author to author (more notably from IWAD to IWAD). It was just two new thirty-two map replacements for Doom II, TNT: Evilution and The Plutonia Experiment. Quake was hot on Final Doom's heels, published all but five days later, and the entire industry was "moving on".

The Wraith Corp MegaWADs: Perdition's Gate and Hell to Pay

WRAITH CORPORATION
PERDITION'S GATE	HELL TO PAY

Wraith Corp. published two megaWADs back in '96, the same year as Final Doom (among other things). Interestingly enough, both works were intertwined with Evilution. Tom Mustaine, Jimmy Sieben, L.A. Sieben, and Jim Elson were all part of Team TNT. I don't know the exact sequence of events, but according to Tom Mustaine, he and his dad Bob started Perdition's Gate during the same period of time the Casalis were developing The Plutonia Experiment. Their intent was to sell it to id as a third megaWAD, making Final Doom a trilogy of sorts. They weren't as fast (or as prompt) as Dario and Milo, though, so when Shawn Green told them their time had run out, they brought Perdition's Gate over to Wraith Corp.