Yep, Sacred Stones is the only game to exist in its own continuity (unless there's some "oh it's a different continent 50 billion years in the past/future" stuff going on like with the Archanea/Jugdral games). First three are all connected, 4th and 5th are connected to each other, 6th and 7th go together, 9th and 10th together, and the new one is in the distant future of the setting of the first three.
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Mistake you're making - overlooking the fact that we might not want to be saved.