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Click image to download this free TTRPG battlemap of an Undercity Cult Temple, then keep scrolling for the detailed adventure prompt written for it ?
Every ten years nine people of varying social status and background go missing in the city never to return and the tenth year has just come again. However this time someone dear to you has gone missing, whether they’re family, a friend or even an innkeeper, they’re gone and with little trace. You must track them down, perhaps it’s not to late to find them before they’re gone forever.
What’s going on? Long ago when this city was founded the people could not know the true nature of the location they had picked. Great horrors slumbered beneath them within the great networks of crypts and vaults that lie below the cities ground. Eventually the cities architects uncovered the ancient vaults and were ordered to open them by the nobility so that they many claim any treasures that were stashed within.
The clerics of the city begged them not to, citing ancient writings they had found with the tunnels, telling tales of ancient evils locked within the vaults, but the nobles didn’t listen and through greed for what they may contain released these evil creatures.
Every night the creatures would make their way into the city from the crypts, killing more innocents and only when the prince was killed in his bed did the nobles come to the clerics begging their help to fix what they had caused. The clerics devised a spell that would once again lock away the horrors but it had a price.
Ten souls would have to give their lives in a blood ritual to once again seal the vault, nine of them could be anyone, however the tenth would have to be of the blood line that was responsible for the opening of the vault and every ten years the spell would need to be repeated.
After this event the nobility took it upon themselves to find higher virtue, every ten the oldest among the nobility volunteers to be the cities sacrifice and keep it’s people safe for the mistake their family once made.
The person you wish to find has been randomly chosen to be one of the other nine that must be sacrificed and is being held in the undercity undergoing a purifying rite for the next week before the sacrifice is to be made, they’re treated kindly but have been made aware of what must happen to them for the good of the city.
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LUKE: The founder of Seafoot Games, Luke's been making maps and RPG games since he was a child, and spent over a decade creating his own game systems from scratch to play with his brothers. That was before he discovered other TTRPGs existed. Now, he paints the realistic grimdark fantasy battlemaps we're known for, helps write adventures as needed, and spends his free time printing and painting 3D minis, as well as working on his forever in-development TTRPG system.
BEB: Luke's wife, Beb's been writing, painting, and graphically designing things her whole life. She published her first book when she was 20, alongside a handful of sci-fi short stories, and was responsible for writing almost all of our adventures until mid 2022 when Steve joined the team. Now she mostly creates the outlines for the adventurer's guides with Luke, graphically designs documents, handles the bookkeeping (or as she likes to call it, bureaucrat wrangling), and manages the website—but she is slowly delegating these responsibilities, so she can focus on raising her and Luke's beautiful son.