From publisher blurb: Through the Halls, Across the Threshold Dungeon amongst the Stars introduces mechanics for using miniatures and battle maps in Big Damn Sci-Fi. Now you have the choice to play combat your way: narrative with adhoc distances and cinematic actions, or miniature with specific ranges and defined actions. Play one, play the other, play both by circumstance the choice is yours! In this core companion you will find: Rules for using miniatures and battle maps in Big Damn Sci-Fi. Mechanics for lighting and cover. New Species Features and Armoury, including Big Species and Trap items. Additional Extras for use in any game.