hey there, i was wondering if it was possible to use the games found here on my 5.05 jailbroken ps4
and if it's not possible, why can't we have all the games listed there playable on 5.05
some games like ICEY and Nidhogg are fun but i can't find them anywhere
That link you provided are Retail PKG's direct from Sony's server. They aren't decrypted or Fake PKG which is what you need to be playable
Games that are DIGITAL ONLY (ie: not released on bluray) are not easy to dump for FPKG,
In order to dump them, someone must have purchased them from PSN, still be on 5.05 firmware and they still need to be installed on the harddrive. Only then can they be dumped and released
This is the reason why some very popular and common digital only ps4 games have yet to be released (Example: Celeste)
For a period of time, people were buying 5.05 PS4 consoles off ebay specifically hoping that previously undumped games were still on the hard drive. As you can imagine this is a needle in a haystack scenario.
It's not like the Switch where we can just get everything easily.