The GBC was fully backwards compatible ... Crystal took what Pokémon Gold and Silver did so marvellously and made Johto worth exploring once more – and Kanto for the umpteenth time, for ...

(tl;dr – if you just want to try the ROMs out, the releases tab contains pre-compiled binaries of each version which you can download as is and try-out in any decent GBC emulator.) ...

This is a disassembly of Pokémon Crystal. It builds the following ROMs: Pokemon - Crystal Version (UE) (V1.0) [C][!].gbc sha1 ...