Johan Lerström - is a video game programmer. Johan Lerström began his career in 2012 and has worked for companies such as Paradox Development Studio and Paradox Interactive. Johan Lerström's first game was Crusader Kings II which was released 12 years ago. Best Game Johan Lerström contributed to was Crusader Kings II. Johan Lerström's latest work is Crusader Kings II which was released 12 years ago.