Developer AD_79
Compatibility Vanilla
Links

Paralysis is a vanilla-compatible episode for Doom II, inspired by new-school run-and-gun projects such as Back to Saturn X and Ancient Aliens. A journey spanning thirteen maps takes one through a variety of locales including waterlogged shrines, ethereal cities, and crumbling temples, all contained within a timeless dreamscape. Yet one cannot remain trapped within the dream forever...

Also featured is an entirely original soundtrack that is equal parts mysterious, mournful, and murderous, and displays some of the author's most ambitious work to date.
Software rendering is recommended.