Death Stranding PS4 to PS5 save transfer requires one final last-gen delivery to move onto the next-gen Director's Cut version: your save file.
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Death Stranding Director's Cut: How to Transfer PS4 Save File to PS5
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Death Stranding Director's Cut Review: An Eccentric Masterpiece Perfected - KeenGamer
How To Transfer Death Stranding PS4 Saves To PS5, Kojima Style
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Death Stranding save transfer to PS5's Director's Cut explained