I wouldn't be surprised if there were nods to previous games in multiple environments as you suggest, but having each planet represent a game would suck. We would have seen everything before, and it would be too history-centric (there must be an actual word for that, anyone?)
English
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And then, what about the players whose knowledge of Bungie titles extends no further than Halo, like mine? Nothing is gained for us, either.
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Yeah I don't mean exact replicas on each planet but yeah, pretty much homages.
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deja-vu-ish?