My only concern was I imagine it requires a reading level that I dont think hes quite as yet
I think a lot of people here will agree that playing videogames with a lot of text can help improve reading a lot. I don't know your nephew, but there are a lot of kids who would have more fun reading videogame text than read a book. Fun learning is the easiest way to learn.
Professional Chespin fanboy. Currently banned from: complaining about IVs
My little cousin of 3 years old plays Pokemon and enjoys it. Although I'm the one who does most of the playing and all he does is whack the touch screen to select one of the four moves to use in battle.
Try out my free Android RPG Strategy game App: https://play.google.com/store/apps/details?id=org.rsakuma.maouwars