The Music of the Gaming World: Evolution and Influence

Once a minor detail, video game music has come to be a key part of the overall experience, to the point where some people even choose games because of the composers who worked on them. This music has also come to have a significant impact on other kinds of musical culture, but how did this happen? Is it simply a side effect of the massive growth in the popularity of games themselves or have other technological and cultural factors played a part?