The dark Kingdom is a custom dungeon crawl where players battle deadly monsters devastating traps and puzzles.  Most parties TPK 

https://startplaying.games/adventure/cm68hufa60061a1arf30ovl8v

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In the last several decades stories of the tyranny and chaos spreading from the small and distant kingdom of Onskell. The tyrannical king Vladin the Butcher, who took the throne at the start of the chaos. The capital city quickly became a ghost town as all the citizens were rapidly fed into Vladin’s Arenas. As candidates for the arena dried up, Vladin began sending his troops to gather travelers from the road and drag them to the arenas. The troops of Onskell soon gave way to roaming bands of bandits that kidnapped any and all they happened across. Recently they began raiding towns for prisoners. Over the last 2 decades over an estimated 1000 people have disappeared into valdins arenas. A noble from the city of Varnek in the kingdom og Giliad by the name Oliver Trent is a wealthy merchant whose business was being ravaged by Vladins raiders over the years. Oliver seeks to hire a seasoned group of adventurers to put an end to Vladins arenas and whatever his plans are. Oliver has arranged for a local wizard to transport the party strait to the city of Onskell where they can make their way to Vladins arena. Join me in an intense and deadly high level dungeon crawl where only the bravest and strongest have a hope to survive.