# Built-in ROM placeholders This directory holds Game Boy ROM images that get embedded into the firmware via `EMBED_FILES`. The repository includes two small placeholder files (`builtin_demo1.gb` and `builtin_demo2.gb`) so that the build system always has something to embed, but they are not valid games. Replace them with legally distributable ROMs to ship useful built-in titles. Filenames are used to derive the save-game slot name.