Marble Madness (prototype)

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Title Screen
Marble Madness (prototype)
Dump status Undumped
Ownership Jun Amanai (???-2017)
Game Marble Madness
System TurboGrafx-16
Genre Platform, Racing
Release date Unreleased

A prototype of the unreleased Turbografx-16 port of Marble madness


Game was in posession by the former Tengen developer Jun Amanai, who posted a video on youtube showing off some of the gameplay. The prototype is, as of 7-24-2017, being sold by the developer on for $6,800, along with a couple of other unreleased games. The game itself seems to be pretty far along, but there's still a few things that just don't work, such as the black marble's AI.