Simplify the following text for a Grade 10 native English-speaking person.
Original: In addition , he directed Staying Alive , the sequel to Saturday Night Fever , along with Rocky II , Rocky III , Rocky IV , Rocky Balboa , and Rambo .
Simplified: He also directed Staying Alive ( the sequel to Saturday Night Fever ) , along with Rocky II , Rocky III , Rocky IV , Rocky Balboa , and Rambo .