Bungies new IP: Destiny, not to be confused by its predecessor Halo. Is about a group of physically/mentally enhanced super soldiers that have to fight off a diverse threat. The background is Humanity expanded making colonies until they met a cataclysmic event. Now you fight off diverse array of aliens working for the destruction of the last stronghold of humanity, slowly encroaching over human colonies. And there is a strange enigmatic higher alien species surrounded with awe and mystery whom you're not sure of the side of, but leave gigantic alien artifacts/weapons lying around.
Not to be confused with Halo.
Halo had flood.
Destiny doesn't.
Maybe.
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Well, what did you expect? What would you say if the next Elder Scrolls was based in a Matrix-like universe, or if Fallout was set in a land recovering from magical fallout, and not radiation? I think it's better for everyone that Bungie stick to what they know and love. Besides, if they want to make sci-fi game, they'll be damned if they aren't going to make a sci-fi game.