There is a world where war walkers and supertanks contend on the battlefield, and rocket fighters duel high in the air. A world where adventurers and super-spies battle the Nazis across the globe, and great evil is faced with great courage - with a little help from Science. This is the world of Gear Krieg! This sourcebook for the Gear Krieg Roleplaying game covers the weird and wonderful inventions of the pulp genre: combat walkers, jet packs, electric guns and other “weird science” devices that change the face of the world on a daily basis. The book has guidelines on how to add pulp vehicles and items in a campaign, along with hints and adventure ideas to jumpstart any game.