Question: Which diceless role-playing game is a role-playing game is named for a legendary unbuilt castle in the Bavarian Alps?
Sentence (from "Diceless role-playing game"): The style of game is known as "diceless" because most games use dice as their randomiser; some games such as "Castle Falkenstein" use other randomisers such as playing cards as substitutes for dice, and are not considered "diceless".
Relevant evidence: Yes