This document provides an overview of the Street Fighter video game franchise and walkthrough of Street Fighter IV. It discusses the history of the Street Fighter series from the original 1987 release to subsequent editions. Street Fighter II from 1991 is described as highly influential, revitalizing arcades, and inspiring many clones due to its intuitive controls, memorable characters, and appeal to casual and hardcore gamers. The document questions why the game's format has changed little in over 20 years despite advances in technology, suggesting its simple yet deep gameplay allows for affective player involvement.