"Cylum's ROM Sets" refer to curated, "ready-to-play" collections of video game ROMs, primarily targeting specific retro handheld devices (such as the Anbernic RG351 series, Miyoo Mini, and Retroid devices). Unlike standard "No-Intro" or "Redump" archives which prioritize raw, unmodified data preservation, Cylum’s sets are functionally optimized. The "Patched" designation indicates that the games within the set have been pre-modified to fix bugs, translate foreign languages, improve compatibility, or unlock hidden content, removing the need for the end-user to manually apply patches.