Pokémon Adventure

Pokémon Adventure is a bootleg platformer released for Game Boy Color in 2000 by Makon Soft. This game turns out to be a hack of Sonic Adventure 7, which possibly makes it the first game to hack an existing hack, Sonic Adventure 7 being a hack of Sonic 3D Blast 5 on the Game Boy. The intro in the game features screenshots of specific Pokémon entries from Pokémon Gold's Japanese Pokédex, complete with the actual Japanese descriptions for each. The borders change with each entry as each screen is a four-color BG image instead of being comprised of various sprites and BGs like in the official Pokédex from Pokémon Gold, Pokémon Silver and Pokémon Crystal.