4780 — Pokemon Heartgold U Xenophobia Link

: Many early Pokemon ROMs included "AP" (anti-piracy) triggers that caused the game to freeze randomly. The Xenophobia release was often sought after because it was compatible with standard patches or was a "clean" base for modding.

To understand what this file represents, it helps to break down each specific component of the filename: 4780 pokemon heartgold u xenophobia link

To understand what this file is, it helps to break down each segment of the release name used by archivers: : Many early Pokemon ROMs included "AP" (anti-piracy)