Because many PSX games were region-locked, you should look specifically for (European) versions, as these are the most likely to contain Spanish (Español) language options.

That’s a BIOS font issue. The Spanish characters (ñ, ¿, ¡) require a European BIOS. Download SCPH7502.bin (Europe) and configure it in emulator settings.

¡Claro! Aquí te dejo una guía relacionada con ROMs de PSX en español, enfocada en el paquete de acción:

Here’s what I can offer instead:

: Los clásicos del survival horror que mezclan combate con resolución de acertijos. Syphon Filter

To enjoy your Action Pack, you will need a reliable PSX emulator. The most popular choices include: