Trolls Bottom is a play-by-mail (PBM) role-playing wargame. It was published by Project Basilisk in the United Kingdom shortly after the company began in 1986 and spread to multiple countries globally over the following year. Up to 70 players per game roleplayed trolls on a volcanic island called Trolls Bottom struggling to win by being the last survivor. Players had various possible actions that affected four character traits. Besides other players, vulture companions and non-player characters populated the island. Orders were written in the style of It's a Crime with turn results written in a comedic style. The game received generally positive reviews in gaming magazines of the late 1980s and was listed No. 1 in Flagship's role-playing wargame category in its Autumn 1987 issue.