Uncharted: The Nathan Drake Collection and Journey are now free to download, no PS Plus required. Part of the Play at Home Initiative, the two games will be free from April 15 20:00 PDT through May 5 20:00 PDT. Sony has earmarked US$10 million to support indie developers, too.
https://www.notebookcheck.net/Sony-makes-Uncharted-The-Nathan-Drake-Collection-and-Journey-free-to-download-from-April-15-through-May-5.461671.0.html