In Nevada the use of force for self defense must meet certain criteria. The force used must be immediately necessary, must be in good faith, and must be a reasonable response to the aggressor's actions. The use of deadly force my only be used to protect one's self from the immediate threat of; rape, kidnapping, serious injury, or death. There is no duty to retreat inside one's home or place of work.
Castle Laws are laws that address the use of force when defending one's self inside their home, or on their property. Some states expand this to vehicles, and the person's place of work. Castle Laws generally include: the places where this law applies, the requirements fro use of deadly force, if there is a duty to retreat, the amount of force that maybe used in defending one's self or others. These vary widely from state to state.