This has been a story that has been adapted into many different media outlets and video games is one of them.  Dr Jekyll and Mr Hyde is a game based on the book, and offeres some interesting gameplay twists.  Obviously Mr Hyde is the dangerous monster so if you cause more damage you tend to transform into him and if you avoid it then you stay as Dr Jekyll for longer.  This character has always been interesting because of his dual nature and many imitations have been used as well when it comes to him.  It is a great character for a video game and other media as well.