From publisher blurb:
The Age of Undying has begun!
This offically-licensed Dungeon Crawl Classics supplement by the creator of the Crawljammer zine includes rules variants, class features, original monsters and more! Basically, whay you get in this 24-page volume is a way to play Dungeon Crawl Classics when the veil between the living and the dead has been rent asunder. This is not un-death...no...this is a state of UNDYING where stitchermen weave together strange beings and souls float across the battlefield, looking for bodies to inhabit so they may fight again.
Everything in The Age of Undying can be easily adapted for your OSR game of choice -- but be warned: if you run your game using the rule variants in here, your PCs will become less likely to survive combat. But it will make them rethink the way they approach encounters. Every decision has a price!
Inspired by renegade priests of Cthulhu, the Catastrophe Island games of Doug Kovacs, Adam Muszkiewicz, and Wayne Snyder, the fiction of Gabriel Squalia, the animation of Henry Selick, Homer's Odyssey, and Clark Ashton Smith's colossus of corpses, The Age of Undying will add a new, viciously-strange turn to your Dungeon Crawl Classics games. Or your other games involving flying lizards and labyrinths. Or your games about mutants on alien planets. Or all of that stuff, at the same time! (Heck, the creator ran it as a Crawljammer game for months!)