When designing "Dragon Quest", Horii play-tests the games to make certain the controls feel right. This includes going into meticulous details such as how fast a page opens or the way a door opens. According to Horii, "... little things like here and there the controls not feeling right and such can really grate the players' nerves if the tempo isn't right." He believes players should be able to control the game unconsciously, which is not easy to accomplish. Horii tries to design the games in such a way that players never need to read a manual nor play through a tutorial in order to figure out how to play the game, and tries to create good storylines with short dialogues. Ryutaro Ichimura, who has worked on "Dragon Quest" titles with Horii since "Dragon Quest VIII", has implemented Horii's suggestions even when it is not obvious why his ideas will work. "lot of the time when he [Horii points these things out, we cannot see them at first, but eventually you get it."