Unreleased Mega Drive games

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Over the course of the Sega Mega Drive's lifetime, a number of games went unreleased:

Name	Involved Companies	Details	ROM Found and Released?
AD2001/Power Ball AD2001	HiCom	Info on this page is all that's known.	No
Akira	THQ	Shown in Player One #44, Console Plus #44, and Console Plus #35. Cancelled for unknown reasons.	No
"Amegedon" Project	??	Info on this page is all that's known.	No
Bean Ball Benny	Nuvision	Cancelled when Nuvision went under. Lost Levels is known to have put up a CES flier for the game, but hasn't properly labelled it as such (TODO).	No
Beyond Zero Tolerance	Technopop	The sequel to Zero Tolerance. Cancelled when Technopop closed down. The copyright holders eventually released a prototype ROM to the Internet.	Yes
City Heroes	Samsung	All that's known comes from this Hardcore Gaming 101 article: Developed by the Uzu Keobukseon team and intended for international release; it was cancelled because the then-new South Korean game censorship laws were so confusing that they got lost trying to censor the otherwise completed game.	No
Converse Hardcore Hoops/Converse City Ball Tour	Virgin	Announced in GamePro #72 and CD Consoles #8. Cancelled for unknown reasons.	No
Dando	Treco	Advertised in magazines, but no actual info is known. (MAGAZINE SOURCE UNVERIFIED — TODO)	No
DNAction: The New Breed	Accolade	[ Shown in Games World #1, Banzzai Magazine #21, GamePro #56, and Player One #4.] Cancelled for unknown reasons.	No
Environmental Detective	Magicom	Shown in some issue of Mean Machine (TODO FIND OUT WHICH). Cancelled for unknown reasons.	No
Explode Star	NCS	The Japanese release of Trampoline Terror!. Cancelled for unknown reasons. Promotional fliers were distributed before the game was cancelled. (FLIER DISTRIBUTION METHOD UNVERIFIED — TODO)	No
Fire & Ice	Graftgold	Cancelled for unknown reasons.	No
Flash Point	Sega	Cancelled for unknown reasons (presumably for the same reason Tetris was pulled from production after some copies had shipped).	Yes
Halloween Capsule	Softmax	Info on this page is all that's known. Cancelled for unknown reasons.	No
Jester	STI	A rather elusive game; very little is known about it (though SOA did advertise it). Cancelled for unknown reasons.	No
Jim Power: The Arcade Game	Loriciel	Cancelled due to "financial troubles."	Yes
Lobo	Ocean	Cancelled for unknown reasons.	Yes
Madness: House of Fun	Gremlin Graphics	Shown in Mean Machine #17 and Mega Force #17. Cancelled for unknown reasons.	No
Ninja Gaiden	Tecmo, Sega	Cancelled for unknown reasons.	Yes (but with hacked headers)
Pinky	Data Design Systems, Tengen	Advertised in magazines. Cancelled for unknown reasons (there are guesses as to what the reason is). (MAGAZINE SOURCE UNVERIFIED — TODO)	No
Popeye	Technos	Shown in Console Mania #28, Game Fun #94, and Mean Machine #17. Cancelled for unknown reasons.	No
Prince of Persia 2: The Shadow and the Flame	Broderbund	Cancelled for unknown reasons.	Yes
ResQ	Tempest, Psygnosis	Cancelled for unknown reasons.	Yes
Socks the Cat	Kaneko	Advertised in magazines. Cancelled for unknown reasons. (MAGAZINE SOURCE UNVERIFIED — TODO)	No
Speed Racer	Accolade	Advertised in magazines. Cancelled for unknown reasons. (MAGAZINE SOURCE UNVERIFIED — TODO)	No
Speedway Pro Challenge	Renovation Products	The planned American localization of Human's 1991 Mega Drive game Fastest 1. Cancelled for unknown reasons. Box scans exist.	No
Stone Protectors	Kemco, Eurocom, VIC Tokai	Cancelled for unknown reasons.	Yes
Swamp Thing	Microsmiths, Nuvision	Cancelled when Nuvision went under.	Yes (but overdumped)
Zombie High	Electronic Arts	Cancelled for unknown reasons.	Yes

Note: the Mega Drive Command & Conquer ROM, long believed to be an unreleased port, is actually an unfinished pirate.