Possible causes:
A first-person spin-off. Not a fan favorite, but its compressed ISO fits in under 120 MB. Resident Evil Psp Iso Highly Compressed Download
Note: Resident Evil: Revelations was released for the 3DS, not PSP. Fan-made conversions exist, but they are unstable. Stick to the PS1 classics for the best experience. Possible causes: A first-person spin-off
The internet is flooded with shady sites. Based on community feedback from Reddit’s r/PSP and GBAtemp, here are general guidelines: not PSP. Fan-made conversions exist