Cory asked Andy Weir:

First of all, I loved the book! I loved how Watney had to be the MacGyver of Mars. Did you think about naming it "MacGyver On Mars"? Just kidding. I thought it was cool that you self released the book first. Was that a decision based on preference? Also, any talks about a movie or a book sequel? Thanks! - Cory

Andy Weir See this question for movie info:

No plans for a sequel. I really have no idea how I could make a sequel to that story.
Andy Weir

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