A trilogy of Zork-style games that comprises Colossal Adventure, Adventure Quest, and Dungeon Adventure. The PC version is the update of the original text-only Middle Earth Trilogy. Colossal Adventure is an expanded version of the original Adventure (mainframe IF) written by Will Crowther and Don Woods.Basically it expands the endgame and the gameworld, adding no new puzzles or plot. The subsequent games in this trilogy are full of illogical puzzles and paper-thin plots, although Dungeon Adventure does add a D&D style magic system to make it more interesting. These games originally had references to Lords of the Ring novels that were later removed, possibly to avoid charges of copyright infringement.