FeatEngine 1.0 - In order to Calculate a certain Frequently-Used Formula in Adventure Entertainments. In an Adventure Entertainment using Castle Falkenstein rules, one Situation that occurs Frequently is the Feat Performance, in which a Dramatic Character with certain Abilities decides whether He or She may adequately perform a certain Task. The Host's card is Revealedƒ Does Mr. Featheringstone catch the struts of the Airship? Or does he plummet to a Certain Death on the rocky shores of Dover? Your new Babbage Feat Engine can tell you!