A "ROM" is a digital copy of a cartridge game. A "Translation Patch" is a piece of software created by hobbyists that rewrites the Japanese text, menus, and logic into English (or other languages). A is simply a curated collection of these already-patched games, bundled together for easy download.
The definitive of the future will likely be powered by AI real-time translation overlays, similar to fan patches for modern visual novels. Until then, the curated pack assembled by human volunteers remains the only way to experience the lost era of 16-bit Japanese gaming.
Most high-quality "packs" are community-curated collections of patches from these authoritative sources: Translations - Romhacking.net
Before Fire Emblem was a global brand, it was a Japan-exclusive strategy series. Genealogy is considered by many fans to have the deepest political story in the franchise. A dedicated team spent over a decade perfecting the translation of its dense scripts and UI menus.
The process involves using romhacking.net to find an English translation patch. This requires downloading an IPS file, Davidvinc RPGs How to Patch ROMS for Sega and Nintendo Games!