Excerpted from the Introduction:
"This adventure is designed for the Tunnels and Trolls role-playing system. It is literally an adventure involving Trolls in Tunnels. In order to play you will need pencil, paper, a 20-sided die, several six-sided dice, and the 5th edition of the Tunnels & Trolls rules.
Most adventures are designed for the "good guys", those brave adventurers who invade subterranean lairs in search of loot and thrills. This one, on the contrary, tries to get you to look at things from the "monster's" point of view. After playing a Troll for a while, you will begin to realize that the delvers are the true monsters of the story."