Because the keyword is popular, malicious actors target it. The "ISO" file might actually be an executable (.exe) file. If you run it on a PC, it could install ransomware, crypto miners, or keyloggers. If you put it on a modded PSP, it could brick your device.
In the mid-2000s, talented homebrew developers created short, playable tech demos that rendered a low-poly Nathan Drake model walking on a beach. These are . They usually last 30 seconds to 2 minutes. While not malicious, they are deeply unsatisfying. Uncharted Psp Iso File Download