https://blog.playstation.com/2021/02...1/#sf243317373

PlayStation and Insomniac Games will make Ratchet & Clank PS4 available for free download for a limited time through PlayStation Store from March 1 at 8pm PST / March 2 at 4am GMT / 5am CET to March 31, 2021 at 8pm PDT* / April 1 at 4am BST / 5am CEST.