What was Michael morpurgos best selling books?

Michael Morpurgo's best-selling book is War Horse, which has sold over 2.5 million copies worldwide. It's also the one that has been adapted into a critically acclaimed stage play and a popular film.

Here are some other of his best-selling books:

* The Butterfly Lion: This story about a boy and his lion in wartime Africa has sold over 1 million copies.

* Private Peaceful: This poignant story about a young soldier in World War I has sold over 1 million copies.

* Kensuke's Kingdom: This adventurous story about a boy who is shipwrecked and befriends a mysterious man has sold over 1 million copies.

It's important to note that these are just some of his most successful books, and Morpurgo has written many others that have enjoyed significant popularity.