Complex sentence: He is known for creating the Rotten Apple series, a series of stories taking place in several cites across the United States & world; exploiting the style of gritty violence, crime, and betrayal.
Split into simpler sentences: He is known for creating the Rotten Apple series. A series of stories taking place in several cites across the United States & world; exploiting the style of gritty violence, crime, and betrayal.