Let the Obsession begin. Again. This time, the entire forces of the netherworld have overrun Earth. To save her, you must descend into the stygian depths of Hell itself! Battle mightier, nastier, deadlier demons and monsters. Use more powerful weapons. Survive more mind-blowing explosions and more of the bloodiest, fiercest, most awesome blastfest ever! Play DOOM II solo, with two people over a modem, or with up to four players over a LAN (supporting IPX protocol). No matter which way you choose, get ready for adrenaline-pumping, action-packed excitement that's sure to give your heart a real workout.
You're a Space marine... Disease. An incurable though tangible threat. The demons prowl among the scorched barrens of Mars. Fleets of cacodemons infest every region. Spectres and imps swarming from every crevice. Deep down under Mars' subterra lies UAC's immense labyrinth of superhuman technology. The underground top secret lair of their most horrific experiments, buried in distress. This is UAC Ultra. An 11 (and a half) map levelset for Doom 2 featuring all new textures, a new monster, new music and several other small touches. Difficulty will hopefully keep you on your feet without being ridiculous. The texture set is available as ultratex.wad v1.2 fixes bugs on all maps. Plus it works with Eternity. Thanks esselfortium and Doomworld!