the space marine could be compared to the cowboys of the old west, or pirates of the high seas. they are tough, smart, and always have the biggest guns or are just insanely strong. the idea of the space marine has been around for a while, but only in recent years have they been popular in books, movies, and videogames. you might not realise it, but you can look in almost any sci fi movie and find a space marine. pretty soon you wont be able to find any children playing "cowboys and injuns" but youll find many playing "spartans and covenants" the only difference is that theyre playing it online via xbox live.