Pokémon Gold and Silver (Space World '97 Prototype)

On November 15th, 1997, an early playable demo of Pokémon Gold and Silver was shown at Space World '97. While considered to be a lost treasure, on May 26th, 2018, an anonymous user unexpectedly dumped a ROM of the elusive demo online, twenty years since it was last playable by the public. May Game Freak have mercy on our souls.

There are 4 separate ROMs: two Gold and two Silver, two Debug and two NonDebug.

Each archive contains two ROMs; the original ROM, and a version with a fixed header that allows it to run on normal Game Boy hardware and most emulators.

To fix a ROM yourself, open the ROM in a hex editor (such as HxD on Windows), and edit the following:
 * For all versions, set the byte at 0x0147 to 0x10
 * For Debug Gold, set the bytes at 0x014D to 0xC7 0x7B 0xA2
 * For NonDebug Gold, set the bytes at 0x014D to 0xC7 0xA2 0x84
 * For Debug Silver, set the bytes at 0x014D to 0x18 0x54 0xEF
 * For NonDebug Silver, set the bytes at 0x014D</tt> to 0x18 0x2C 0x58</tt>