Rotation letters speed reading game. So you want to increase your reading rate, but you don't know where to begin? Reading difficulties stem from a variety of causes: single word reading\; inadequate vocabulary\; inability to vary the r Rotation letters speed reading game. So you want to increase your reading rate, but you don't know where to begin? Reading difficulties stem from a variety of causes: single word reading\; inadequate vocabulary\; inability to vary the reading rate to suit the material\; lack of concentration\; and a habit of reading slowly. Become conscious of your reading habits.