Dynasty Warriors 4 is a hack and slash video game and the fourth installment in the popular Dynasty Warriors series. Dynasty Warriors 4 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.Originally released on the PS2 in March 2003 it was later ported to the Xbox in September of the same year and in 2005 ported to the PC under the name Dynasty Warriors 4 Hyper.