From the back cover:
The classic test of an adventurer's skill. Bizarre traps and exotic monsters stand in the way of ancient treasures. Cruel villains often use them to hide their machinations from the prying of adventuring meddlers.
But some dungeons want to be found.
Rumors tell of these great death traps, where adventurers are lured or forced to compete for the entertainment of the Society of Sinister Sport, a secretive organization devoted to profiting from the injury and death of adventurers - for the rich and jaded will pay grandly for the chance to watch heroes fall.
The creators of Tournaments, Fairs & Taverns (2nd Edition) present four devious death-traps, designed to be inserted into an existing campaign as a uniquely challenging encounter, or to be used individually as a one-night session for when you don't have a game planned. From the psychological horrors of the Dungeon of Darkest Shadow to the hellspawned hordes within the Well of Fiends, you will find many ways within to challenge your characters with these Deadly Games.