This collection was released digitally on the PlayStation Store, and it's possible to download and play the games on the PS4.
Launch the Remote Package Installer app on your jailbroken PS4. Metal Slug Ps4 Pkg
Many of these have been delisted regionally or require an active PS Plus Premium subscription. This is why the PKG underground thrives. This collection was released digitally on the PlayStation
Have you installed a Metal Slug PKG on your PS4? Share your experience in the comments (but remember: keep it legal, soldiers). Metal Slug Ps4 Pkg