 The biggest point of contention among the developers was including options allowing for the revival of fallen units in " Casual Mode " , a recurring discussion stretching back to the development of Fire Emblem : Genealogy of the Holy War ( 1996 ) . The dispute between Intelligent Systems and Nintendo staff was fierce , but positive comments from <unk> with the feature included helped those opposed come round to its inclusion . The four difficulty levels were made separate from the two modes of play , so players could adjust the experience to suit their needs . Another new element was the Avatar character , who was created so players would have an easier introduction , as the developers realized that they might end up creating the game assuming players would know about main protagonist Marth when that might not be the case . Alongside the Avatar was a new tutorial , which the developers needed to balance so it was enjoyable for series veterans while easing new players into the experience . Also new was the element of time passing when the system was turned off and the cartridge still in place . The content grew to the point that the developers contemplated dividing New Mystery of the Emblem itself into two releases . 
