Unplayable other than the copyright logos. PS2 on PS4 4.55
NOTICE: Please note that this video is posted for the sake of demonstration of how potentially Crash Bandicoot games on the PS4 from those that got released on the PS2 would work on the official emulator (Proof of Concept based on the jailbreak). It is not recommended ever to try this out as it can void your warranty and possibly get your PSN account banned permanently. In addition, do not ask for download links or instructions on replicating this.