From publisher blurb: A derelect spire stands landmark on the Crystal Frontier's Northern border. Glassy pink masonry shattered, pillars tumbled, and the entire edifice driven into the earth - an arrow from beyond the fixed stars. Ignored as too small and inaccessible by the larger bands of Gem Robbers, perhaps there's still treasures beneath the Broken Bastion's ruin? GAZE upon arcane works of the Empyreans! FLY from the ominous tread of thier War Automata! SALVAGE wonders from beyond the terrestrial sphere! A complete fourteen page mini-adventure for Level 3 characters designed for the upcoming Tomb Robbers of the Crystal Frontier setting, but ready to drop into almost any fantasy world. Broken Bastion is stated for the wayward offspring of older editions of the first roleplaying game and easily converted to retro-clones such as OSE. Broken Bastion is an experimental adventure, a testbed of complex mechanics that create a high-risk environment for the adventurers within and includes a fair number of explanatory notes to assit Game Masters with these atypical mechanics.