Nintendo - Game Boy (Color) prototypes undumped

Confirmed to exist

• Four Akira protos https://www.youtube.com/watch?v=9YoD2OVkAVY https://twitter.com/originalpsp/status/770330542784917505 https://www.youtube.com/watch?v=FjZw8ACi-o8 https://twitter.com/OriginalPSP/status/1114611829223972865
• Some protos https://www.reddit.com/r/Gameboy/comments/3s9m2z/snagged_my_first_prototype_gameboy_games_from_ebay/
• Ayakashi no Shiro ("Castle of Magic" - unreleased western version?) https://www.reddit.com/r/Gameboy/comments/emkqhr/never_released_undumped_castle_of_magic/ https://www.ebay.com/itm/183926199117

Region	Name	Notes	Picture(s)	Transcription(s)	Translation(s)
Japan	DuckTales	Sold via Yahoo Auctions. Seller didn't compare it with the final version - says he couldn't get a hold of it.		ダックテールズ 要返却 DT-13	DuckTales Return required DT-13
Japan	Metal Gear Solid - Ghost Babel	Seen in Twitter post. Owner wanted to dump.	(todo add pics from twitter)
Japan	Outburst	Sold via Yahoo Auctions.	(todo add pics from auction)
USA	Titus Jr.	Unreleased GBC game, Unseen64 link, game footage