From publisher blurb:
Who Dares Trespass into The Tower the Twisted Mage?
Orin, the Wizard is missing. And his apprentice is hiring adventurers to go look for him in his last known whereabouts: The infamous Tower of Zaradon, the Twisted Mage.
This is a One-shot adventure designed to give GMs and Players a couple of hours of interaction, problem-solving, exploration and combat as they venture into an old and crumbling tower infested with strange creatures, vicious traps and all sorts of mischievous magic conjured centuries ago by the powerful Zaradon, the Twisted Mage.
Delve into The Tower of the Twisted Mage, a One-Shot Dungeon Crawl Adventure for Starting Players. This book contains descriptions and maps for all the rooms in the tower including treasure, traps, magic items, and also a brand-new Monster, all compatible with Old-School Essentials and a bunch of OSR games, and easily adapted to Pathfinder, Into the Odd Shadowdark or 5th edition.