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 think anyone foolish enough to say Star Wars before doing research on the Precursors just look like complete ignoramuses. Their structures are made of the very fabric of the universe, and I don't recall any Death Star ripping a hole in the fabric of the universe.