The released of his 13th book was highly anticipated because Mark is already 119 years old. It broke the record being the best selling book of all time. Again, some recording companies approached him to do a movie the two books but he declined them.
He revised his last will of testament regarding the royalties of his book, and other properties he had. Some parts goes to his own charity. He also stated that none of his book shouldn't be adapted to a film.
At the end of 2019, all his books are re-released with most of its proceeds going to the charity. He's very happy, and he felt he has fulfilled a lot. But he needs to write his last book, his 14th.