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Mobile21 was a company that was jointly owned by Nintendo and Konami. The company worked to create various titles, some of which supported the Mobile GB Adapter.


Platform Release Title
Game Boy Color 2001 Net de Get Minigame @100
Game Boy Advance 2001 Jurassic Park III: Island Attack
Game Boy Advance 2001 Doraemon: Midori no Wakusei Doki Doki Daikyuushuutsu! (2001)
Game Boy Advance 2001 Gradius Galaxies
Game Boy Advance 2001 Mobile Professional Baseball (2001)
Game Boy Advance 2001 EX Monopoly (2001)
Game Boy Advance 2001 Monster Guardians
Game Boy Advance 2001 Tanbi Musou: Meine Liebe
Game Boy Advance 2002 AirForce Delta Storm
Game Boy Advance 2002 Koro Koro Puzzle Happy Panechu!
Game Boy Advance 2002 Mail de Cute (2002)


Mobile21 produced a game using one of the most complex Memory Bank Controllers, Net de Get Minigame @ 100 which uses MBC6. There are no other MBC6 games. What makes it special is using flash memory to download games with internal Mobile System GB commands, (for 100 yen each it's believed) but the service is long discontinued, so even today many of the downloadable games may not be documented on the Internet.