No ports or Remasters, but Remakes are okay.

Also timed exclusives are okay as well, as long as they were exclusive for the first year; if they weren't, that means titles like God of War, Horizon Zero Dawn, Spider-Man, Uncharted, etc, would be disqualified.

Any exclusives that released after Miles Morales and Sackboy's Big Adventure count as "PS5 Games" even if a PS4 version released alongside it. Even if they are more like PS4 games that were upscaled for PS5, so long as they released after the console launch and on both systems simultaneously, I will categorise them as PS5 exclusives.