Dynasty Warriors 4 is a hack and slash video game and the fourth installment in the popular Dynasty Warriors series. Dynasty Warriors 4 Hyper was developed by Omega Force and is based on a series of books called Romance of the Three Kingdoms, written by Luo Guanzhong. As the series has progressed, it has strayed further from the actual plot of Romance of the Three Kingdoms but instead has given the user more input on how the storyline progresses. Dynasty Warriors 4 was ported to the PC under the name Dynasty Warriors 4 Hyper.