@TPR said in Calling Pi 4 Atari Jaguar Fans:

The ROM I have is marked "world" so not sure if there were specific NTSC or PAL roms.

ROM with (World) tag means that game version got released across all regions with exact same data, so it runs in NTSC and PAL modes without Region Lock, although I have never seen a ROM with "(World)" Tag that is PAL optimized in the consoles before Sega Dreamcast.

source: https://www.reddit.com/r/Roms/comments/17ihxy1/what_are_worldwide_roms_vs_ntscpal/?rdt=56874#:~:text=ROM with (World) tag means,the consoles before Sega Dreamcast.