>>42772323Not really unused stuff in any of the actual games, but still pretty interesting.
tl;dr Ranger could've originally been a GBA game with (presumably) a very different style of gameplay.
https://digiex.net/threads/unreleased-pokemon-slot-2-distribution-decchi-bin-azure-flute-arceus-distribution-download-jpn.14999/>Within several of the Nintendo DS distribution roms there is an unused file hidden within it called "decchi.bin". This may be best known by some people as a file that had been found in the US GameStop Deoxys rom, however it is in several more, like the Toys R US Dragonite. This file, decchi.bin, is actually a GBA rom. The rom is Japanese GBA prototype of the original Pokemon Ranger game, though the game was eventually released on the NDS, never the GBA. This implies production of the first Pokemon Ranger started on the GBA, but eventually got pushed to the NDS.>You can run decchi.bin in a GBA emulator, however all you will see is s a rough prototype title screen consisting of the Japanese Pokemon Ranger logo and what appears to be what the game's serial number would've been if it were completed and made for a retail GBA cartridge, their is nothing you can do with it here. However, this rom hides an even bigger secret. If you load the rom in Slot-2 in a NDS emulator, then then load a Japanese Pokemon Diamond or Pearl game, decchi.bin will reveal that it is also a prototype distribution rom used for testing in the early days of Diamond and Pearl. 