Guarding an expedition into the deepest recesses of a dangerous jungle is no simple task. When that jungle happens to be the home of the Gorilla King, the job is downright deadly! River into Darkness is a wilderness adventure for low-level characters, compatible with the world's most popular fantasy roleplaying game, and part of the GameMastery Module line. GameMastery Modules also include four pre-made characters so players can jump right into the action and full-color maps and handouts to enhance play.