The Bleak Holdfast of the Heartless Queen
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High above the snow line there is a castle on a crag. It is an object of fear and hatred¸ because the Heartless Queen holds court there and she is pitiless in her anger and host to terrible friends. Between the Frost Wyrms¸ the Ice Harpies¸ and the Frozen Thing that Guards the Bridge¸ even getting in is difficult.
Most locals stay as far away as they can¸ but between courage¸ pride¸ and burning vengeance there are always some willing to take a shot at it. And travellers from the soft¸ warm south might hear stories of the Queen's fantastical treasures and be oblivious about the horrors that protect them.
Player characters may have many reasons to interfere with the castle¸ and this thus constitutes an adventure location for the Old-School Essentials rules¸ for 5-6 PCs of 3rd level or slightly fewer of 4th.
Features:
A 70 location adventure site with a complex multi-path ('Jaquay'd') layout Several goals the PCs could have within that site An unusual environment (a castle made largely of ice) Several detailed NPCs¸ some of whom can be set against each other Several distinctive creature and minor NPC types An adversary roster to help you predict the castle's response to disturbance