Hot Springs Island is a high fantasy sandbox adventure setting that can be used with any table top role playing game. It's comprised of two books: One for players and one for the game master.
The Dark of Hot Springs Island is the game master's book. It is a fully illustrated 192 page book. Hot Springs Island is a hexcrawl, and the Dark contains all the details needed to run a sandbox game there. There are 75 locations on the island, and 26 maps ranging from ogre villages to a ruined elven city to the volcanic lair of a vain efreet. Seven factions, 87 interconnected non-player characters and 300 problematic treasures are sure to generate plenty of lingering repercussions each time your players make a decision. Finally, 448 random events and encounter motivations help ensure that every play-through of Hot Springs Island can explode into wildly different outcomes from the same basic parameters.
The Dark of Hot Springs Island is a companion book to the Field Guide, and contains everything a Game Master needs to run a game there (except stats) in the system of their choice.