Fics like The Walls Are Thin: The Seven Emeralds

It starts small. Dreams that don't belong to you. Signals coming from nowhere. People turning up in places they absolutely should not be. When it starts happening more often, and across several *very* different versions of the same world, everyone slowly has to really deal with the fact that reality apparently has a lot less structural integrity than they were led to believe. Somewhere in the middle of all this, Darkseid is doing something. Which is probably not great. A giant, extremely self-indulgent Sonic multiverse crossover about a bunch of continuities colliding, characters who were never supposed to meet each other meeting anyway, and eventually far too many hedgehogs.

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