http://www.scholastic.com/titles/rickyricotta/
The Might Robot series is good. My son likes these books. He's 7.
The boys in his class like this series. And sure, my son has the super hero or star wars type books too. But those are not the only books.
Scholastic is a good site to look up books and per age.
http://www.scholastic.com/home/
Eric Carle also has many books... that are for older reading abilities.
Also remember that picture books, does not mean a book is too 'easy' for a kid. Many picture books, are higher level books, as well.
http://www.eric-carle.com/home.html
My kids never really liked the Magic Tree House series.
They found it, boring.
Geronimo Stilton is also a good series. Lots of Teachers have these books in their classroom.
"Little Bear" by Elsa Holmelund Minarik, & Maurice Sendak is also a good series and it is a chapter type book.
National Geographic also has good kid series books.
Look it up on the Scholastic site or online anywhere.
My son and daughter likes these. Books about creatures and nature.
Your son is young.
It has to be remembered, that even if a kid is good at reading... remember the kid's age, still.
Just because a kid can read well or advanced, it does not mean their OVERALL development/cognition/emotions are developed at the same rate.
Your son is still, 5.
And the "topics" for reading, even if a kid is ahead in reading, will greatly vary for older kids. ie: you wouldn't want your 5 year old, reading books that are geared for older kids, the topics, are very different and the concepts. ie: Tween aged books. Are not for younger kids.
Reading and reading ability, is only one... of the abilities a kid has. It does not also mean that the child's overall development, is the same as their reading ability. And reading ability is not the same as age related development in other aspects.
Kids like when books are read to them.
As your son gets older, he will then... start to read on his own. By himself.
Or want to.
And he will then get to know himself and what genre of books he likes.
Your son is only 5.
Attention spans of 5 year olds... are not such that they will sit there and read an entire book by themselves.
Let your son like reading. For fun.
My son can read very well.
My Husband tried pushing advanced books on him, chapter books that older grades were reading. At that point... my son got fed up with reading.
My Husband had the wrong thought... that just because my son was reading books with pictures/illustrations in it, that it was 'baby' books.
But that is not true.
As I said, Authors like Eric Carle for example, also has many illustrated books, that are higher level reading.
Even my kids' Teachers, said that.
AND once a kid starts reading more advanced stuff... you will have to be careful of the "topics" of the books. ie: you wouldn't want a 7 year old reading books that are about teenager topics or boyfriend/girlfriend type scenarios.