Main files
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Know the difference between v1 and v2, and DON'T update from v1 unless you understand the Scholars Unlocked changes. You can use v2 without v1. Choose one version only.
Optional files
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Contains nearly 500 autosaves so you can jump back in time by deleting higher level saves if you want.
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Know the difference between v1 and v2, and DON'T update from v1 unless you understand the Scholars Unlocked changes. You can use v2 without v1 (save games, not pre-material).
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Know the difference between v1 and v2, and DON'T update from v1 unless you understand the Scholars Unlocked changes. You can use v2 without v1. V3 is all saves after v2 only. Choose one version only.