Twisted Doors: A Collection of Magic and Unusual Doors for Four Against Darkness

Twisted Doors is a zine for Four Against Darkness with a complete system for random generation of the doors in a dungeon. From doors made from tied up branches to metal doors, doors laden with magic and mechanicals traps, and unusual magical doors that demand several types of tithes, doors take on a completely new light with this supplement.

—description from the publisher