Who wins?
By entire, I mean EVERYTHING. Halo, for example, would have all of the Precursors, Forerunners, Covenant, Flood, and Humans all teamed up against ALL the Star Wars universe
They all have their technology as well. Halo has their Halo Rings and such, Star Wars has all their Star Destroyers and Death Stars and all that
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I can see it Spartans shooting down clone troopers and Jedi all at the same time master chief leading I'm using a energy sword taking on kanobi suddenly he screams and dies then we over run the Jedi master chief takes on yoda and squashes yoda