Rampage IV: The New Blood The fourth film in the Bill Williamson saga. Details Casts Videos Title Rampage IV: The New Blood Release Date Runtime 01 Hours 33 Minutes Genres Action Adventure Crime Drama Production Companies Boll KG Production Countries Canada, Germany, United States of America Brendan Fletcher... Bill Williamson... Rampage IV: The New Blood (2021) Teaser Trailer (Teaser)