The demonweb; The Black Gauntlet of Ruin. Dungeon Generator. The Ironworks - Dungeon Craft - Features. Dungeon Craft is an adventure creator that is based on the AD&D gaming system. It mimics the features and functionality of SSI's Forgotten Realms Unlimited Adventures or 'FRUA' short. While FRUA is DOS based, Dungeon Craft is Win32 based and currently runs under Windows 95/98/Me/NT using DirectX 3 or higher. Richard Turner has attempted to recreate the functionality of the original FRUA/Gold Box game engine as closely as possible. However, MANY improvements have been made.