Mighty Max (USA) (Demo)
A demo of Mighty Max as a 2 player game, but it auto plays both players for you. No intro screen, just the game playing itself. Not much to say, it doesn't play long and loops. Looks like it might have been for shops to just leave on loops or to take screenshots from, etc.
It has an internal title of MIGHTY MAX DEMO
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A gameplay video play through played by Kiddo Cabbusses | サテラビュー好きの外人さん: