If you manage to play the original Far Cry on PC or console today, expect a main story length of roughly 11 hours .
: It was never officially announced, but historians suggest it might have been a conversion or a unique entry related to or the console-specific Far Cry Instincts : The game was early in production and never shown to the public. www.ign.com Handheld Alternatives If you are looking for a portable experience from that era, the series took a different path: Far Cry Vengeance - Википедия
This is just a rough outline, but I hope it gives you an idea of what a PSP version of Far Cry 1 could look like!
If you are looking to play the original game today on a portable device, your best bet is a Steam Deck Go to product viewer dialog for this item. (native PC version) or a Go to product viewer dialog for this item. (via the homebrew port).
Far Cry PSP attempted to solve this via the "Face Button" method, mapping camera movement to the $\Delta$, $\bigcirc$, $\square$, and $\times$ buttons. While functional, this method lacks the precision of an analog stick. To compensate for the inability to make fine-tuned aiming adjustments, the developers implemented heavy auto-aim mechanics.